Introduction
The Amish Oatmeal Rhubarb Bars Recipe is a beloved dessert that blends the wholesome texture of oatmeal with the tangy-sweet flavor of fresh rhubarb. Known for its old-fashioned charm and satisfying balance of flavors, this treat is perfect for family gatherings, bake sales, or a cozy afternoon snack. In this guide, you’ll find everything from ingredient tips to baking techniques, ensuring your bars come out perfect every time. Whether you’re a seasoned baker or new to Amish-inspired desserts, this recipe offers a straightforward, foolproof approach.
For another delicious Amish dessert, you might also enjoy our Amish Shortcake Recipe — a sweet, fluffy treat perfect for pairing with fresh fruit.
What is Amish Oatmeal Rhubarb Bars Recipe?
Amish oatmeal rhubarb bars are a traditional baked dessert made with a buttery oatmeal crust, a sweet-tart rhubarb filling, and a crumbly oat topping. Originating from Amish kitchens, this recipe emphasizes simple, pantry-friendly ingredients and minimal fuss. The combination of hearty oats and bright rhubarb makes these bars a delightful mix of rustic texture and refreshing flavor. They’re often enjoyed as a dessert, but they can also double as a breakfast treat or afternoon pick-me-up.
Why This Recipe is Perfect for You
If you love desserts that are both nostalgic and versatile, the Amish Oatmeal Rhubarb Bars Recipe will win you over. It’s easy enough for beginners yet flavorful enough to impress guests. The recipe also adapts well to seasonal variations — you can swap rhubarb for other fruits like strawberries or apples when rhubarb is out of season. Plus, these bars store beautifully, making them a convenient make-ahead option for busy schedules. Whether you crave something homemade, comforting, or just want to try an authentic Amish bake, this recipe delivers.
Amish Oatmeal Rhubarb Bars Recipe
Equipment
- 9×13-inch baking dish
- Mixing bowls
- Saucepan
- Spatula or spoon for mixing
- Measuring cups and spoons
- Wire rack for cooling
Ingredients
- For the crust and topping:
- 2 cups old-fashioned rolled oats
- 1 ½ cups all-purpose flour
- 1 cup packed brown sugar
- 1 teaspoon ground cinnamon
- 1 cup unsalted butter melted
- For the rhubarb filling:
- 4 cups chopped fresh rhubarb
- 1 cup granulated sugar
- 2 tablespoons cornstarch
- 1 teaspoon vanilla extract
Instructions
- Preheat the oven to 350°F (175°C). Grease or line a 9×13-inch baking dish with parchment paper.
- In a large mixing bowl, combine oats, flour, brown sugar, and cinnamon. Add melted butter and mix until crumbly.
- Press half of the oat mixture into the bottom of the prepared baking dish to form the crust.
- In a saucepan, combine chopped rhubarb, granulated sugar, cornstarch, and vanilla. Cook over medium heat, stirring frequently, until thickened, about 10 minutes.
- Spread the rhubarb filling evenly over the crust.
- Sprinkle the remaining oat mixture over the filling.
- Bake for 35–40 minutes, until the topping is golden and the filling is bubbly.
- Cool completely in the pan on a wire rack before cutting into bars.
Notes
Table of Contents
Why You’ll Love This Amish Oatmeal Rhubarb Bars Recipe
There’s something special about the Amish Oatmeal Rhubarb Bars Recipe—it’s a dessert that feels both nostalgic and timeless. The hearty oat crust and crumbly topping bring a warm, comforting texture, while the tart rhubarb filling adds a refreshing burst of flavor. It’s the perfect dessert for spring and summer when rhubarb is in season, but it can be enjoyed year-round with frozen rhubarb as well. Whether you’re baking for your family, preparing for a church potluck, or simply treating yourself, these bars deliver a balance of sweetness and tang that makes every bite memorable.
Beyond taste, this recipe represents the charm of Amish baking—simple ingredients, straightforward techniques, and a focus on flavor over fuss. It’s a dessert that anyone can master, making it ideal for both beginners and seasoned bakers.
Main Highlights
- Authentic Amish baking tradition that prioritizes flavor and simplicity
- Perfect balance of textures—chewy oats, tender rhubarb, and crumbly topping
- Crowd-pleasing recipe that works for holidays, picnics, and bake sales
- Easy-to-follow steps—even kitchen novices can achieve great results
- Long-lasting freshness when stored properly, so you can bake ahead of time
Cost-Saving Benefits
One of the most appealing aspects of this Amish Oatmeal Rhubarb Bars Recipe is its affordability. Unlike elaborate desserts that require specialty ingredients, this recipe uses inexpensive pantry staples such as oats, flour, brown sugar, and butter. Rhubarb, especially when grown in your own garden or sourced from a local farmers’ market, is a cost-effective fruit that adds big flavor without breaking the budget.
Baking at home also means you can make a generous batch for a fraction of the cost of store-bought pastries. You control the ingredient quality, ensuring a fresher, healthier dessert without the preservatives or artificial additives often found in packaged goods.
Flavorful Toppings and Customizations
While the classic version is already irresistible, this Amish Oatmeal Rhubarb Bars Recipe can be customized in endless ways to suit your taste or match seasonal ingredients:
- Glazed Finish – Drizzle with a simple vanilla or lemon glaze for an extra touch of sweetness.
- Nutty Crunch – Sprinkle chopped walnuts, pecans, or almonds on top before baking.
- Fruit Variations – Combine rhubarb with strawberries for a sweeter profile or with apples for a fall-inspired twist.
- Spiced Upgrade – Add cinnamon or nutmeg to the oat mixture for a warm, aromatic flavor.
- Indulgent Serve – Enjoy warm with a scoop of vanilla ice cream or a dollop of whipped cream.
With these ideas, you can adapt the recipe to match your mood, the season, or the ingredients you have on hand—making it a versatile staple in your baking collection.
How to Make Amish Oatmeal Rhubarb Bars Recipe
Baking these Amish Oatmeal Rhubarb Bars Recipe is simple and rewarding. With just a few basic ingredients and straightforward steps, you can create a dessert that’s perfect for both everyday enjoyment and special gatherings. This recipe keeps to the Amish tradition—minimal fuss, maximum flavor.
Quick Overview
To make Amish oatmeal rhubarb bars recipe, you’ll start by preparing a buttery oatmeal crust that also doubles as the crumbly topping. The middle layer features a tangy-sweet rhubarb filling that bakes into the oats, creating a delicious contrast in texture and flavor. Once baked to golden perfection, the bars are cooled, sliced, and enjoyed either warm or chilled.
Basic process:
- Prep the crust/topping – Combine oats, flour, sugar, and butter to create a crumbly mixture.
- Make the filling – Toss chopped rhubarb with sugar and a touch of flour or cornstarch.
- Assemble – Press part of the oat mixture into the baking pan, spread the rhubarb filling over it, and sprinkle with remaining oats.
- Bake & cool – Bake until the top is golden and the filling is bubbling, then cool before slicing.
This simple process takes minimal active time, making it an easy dessert to fit into your schedule.
Key Ingredients
Here’s what makes the Amish Oatmeal Rhubarb Bars Recipe shine:
- Old-fashioned oats – Provide a chewy, hearty texture for the crust and topping.
- All-purpose flour – Helps bind the oat mixture for a firm yet tender bite.
- Brown sugar – Adds sweetness and a hint of caramel flavor.
- Unsalted butter – Creates richness and helps the oats form a crisp topping.
- Fresh rhubarb – The star ingredient, offering a tart flavor that balances the sweet oat crust.
- Granulated sugar – Sweetens the rhubarb filling.
- Cornstarch or flour – Thickens the filling to prevent excess liquid.
- Optional spices – Cinnamon or nutmeg for a warm, cozy touch.
Equipment
To make the Amish Oatmeal Rhubarb Bars Recipe, you’ll only need a few basic kitchen tools. Using the right equipment ensures even baking, a perfect texture, and easy cleanup.
- Mixing bowls – At least two: one for the oat mixture and one for the rhubarb filling.
- Measuring cups and spoons – For accurate ingredient portions.
- Cutting board & sharp knife – To chop fresh rhubarb evenly.
- Wooden spoon or silicone spatula – For mixing ingredients without overworking the dough.
- 9×13-inch baking pan – The ideal size for evenly baked bars.
- Parchment paper or nonstick spray – Prevents sticking and makes lifting the bars easier.
- Oven mitts – Essential for safely handling hot pans.
- Cooling rack – Helps the bars cool evenly before slicing.
Optional: A pastry blender can make cutting the butter into the oat mixture quicker and more efficient, but you can also use a fork or your hands.
Ingredients
To create the perfect Amish Oatmeal Rhubarb Bars Recipe, you’ll need simple pantry staples paired with fresh rhubarb. Using quality ingredients will make all the difference in flavor and texture.
For the Oatmeal Crust and Topping
- 2 cups old-fashioned rolled oats – For a chewy, hearty texture.
- 1 ½ cups all-purpose flour – Helps bind the crust and topping.
- 1 cup packed brown sugar – Adds sweetness and a subtle molasses flavor.
- 1 cup unsalted butter, cold and cubed – Creates a rich, crumbly texture.
- ½ teaspoon baking soda – Aids in creating a light, tender bite.
- ¼ teaspoon salt – Enhances overall flavor.
For the Rhubarb Filling
- 4 cups fresh rhubarb, chopped – The tart star of the recipe; frozen rhubarb works too.
- 1 cup granulated sugar – Balances the tartness of the rhubarb.
- 2 tablespoons cornstarch – Thickens the filling so it sets well in the bars.
- 1 teaspoon vanilla extract – Adds warmth and depth to the filling.
Optional Add-Ins & Variations
- ½ teaspoon cinnamon – For a cozy, spiced undertone.
- ½ cup chopped nuts – Walnuts or pecans for crunch.
- ½ cup strawberries – Combine with rhubarb for extra sweetness.
Pro Tip: For best results, make sure your butter is cold when mixing it into the oats—this ensures a crisp, golden topping after baking.
Step-by-Step Instructions
Follow these steps to make your Amish Oatmeal Rhubarb Bars Recipe perfectly every time.
- Preheat the Oven
Set your oven to 350°F (175°C) and lightly grease a 9×13-inch baking pan, or line it with parchment paper for easy removal. - Prepare the Oatmeal Crust and Topping
In a large mixing bowl, combine oats, flour, brown sugar, baking soda, and salt. Add the cold, cubed butter and cut it into the dry mixture using a pastry blender, fork, or your fingertips until it resembles coarse crumbs. - Form the Base Layer
Press about two-thirds of the oat mixture firmly into the bottom of the prepared baking pan. Reserve the remaining mixture for the topping. - Make the Rhubarb Filling
In a separate bowl, combine chopped rhubarb, granulated sugar, cornstarch, and vanilla extract. Stir until the rhubarb is evenly coated and the mixture is well combined. - Assemble the Bars
Spread the rhubarb filling evenly over the crust in the baking pan. Sprinkle the reserved oat mixture over the top, covering the filling completely. - Bake to Perfection
Place the pan in the preheated oven and bake for 40–45 minutes, or until the topping is golden brown and the filling is bubbling around the edges. - Cool Before Slicing
Remove the bars from the oven and place the pan on a cooling rack. Allow them to cool completely—this helps the filling set and makes slicing cleaner. - Serve and Enjoy
Cut into squares or rectangles and serve as-is, or top with vanilla ice cream or whipped cream for an extra indulgence.
Storage & Make-Ahead Tips
The Amish Oatmeal Rhubarb Bars Recipe is perfect for baking ahead of time and enjoying over several days. With the right storage methods, you can keep the bars fresh, flavorful, and ready to serve whenever you need them.
Storing at Room Temperature
- Place the completely cooled bars in an airtight container.
- Keep them at room temperature for up to 2 days.
- For best texture, separate layers with parchment paper to prevent sticking.
Refrigerating for Longer Freshness
- Store the bars in a covered container in the refrigerator for up to 5 days.
- This method helps maintain the tartness of the rhubarb and the firmness of the crust.
- Allow bars to come to room temperature or warm them slightly before serving for the best flavor.
Freezing for Extended Storage
- Wrap each bar individually in plastic wrap, then place them in a freezer-safe bag or container.
- Freeze for up to 3 months.
- To thaw, leave them in the refrigerator overnight or at room temperature for a few hours.
Make-Ahead Baking
- You can prepare the oat crust/topping mixture and the rhubarb filling up to 24 hours in advance.
- Store each component separately in the fridge, then assemble and bake when ready.
- This approach is great for saving time when hosting or preparing for events.
Pro Tip: If you plan to glaze or drizzle your bars, wait until just before serving to prevent the topping from soaking into the crust.
Serving Suggestions
The Amish Oatmeal Rhubarb Bars Recipe is versatile and can be enjoyed in many ways, making it a hit for breakfast, snacks, or dessert. Here are some creative serving ideas:
Classic Enjoyment
- Serve the bars plain or slightly warmed—perfect with a cup of tea or coffee for a cozy treat.
With Ice Cream or Whipped Cream
- Top a bar from the Amish Oatmeal Rhubarb Bars Recipe with vanilla ice cream or a dollop of whipped cream for a comforting dessert.
- Add a drizzle of caramel or honey for extra sweetness.
Fruit Pairings
- Complement the tangy rhubarb with fresh berries, like strawberries or raspberries.
- Sprinkle with a little powdered sugar for an elegant touch.
Breakfast Twist
- Pair a bar from this Amish Oatmeal Rhubarb Bars Recipe with yogurt and granola for a wholesome breakfast or brunch option.
- Serve alongside a smoothie for a balanced morning treat.
Party & Gift Ideas
- Cut into bite-sized squares for potlucks or parties.
- Wrap bars individually in parchment paper to gift to friends and family.
Pro Tip: Warming the bars slightly in the oven or microwave brings out the oat aroma and enhances the flavor of the rhubarb filling.
Top Tips for Perfecting Amish Oatmeal Rhubarb Bars Recipe
Baking the perfect Amish Oatmeal Rhubarb Bars Recipe doesn’t have to be intimidating. With a few key strategies, you can ensure each bar has a golden, crumbly oat topping, a perfectly set rhubarb filling, and a balanced sweet-tart flavor. Follow these expert tips to take your homemade bars to the next level.
1. Choose Fresh, Firm Rhubarb
- Select rhubarb stalks that are bright in color and firm to the touch. Avoid limp or overly soft stalks, which can release too much moisture and make the filling soggy.
- If using frozen rhubarb, thaw and drain thoroughly to prevent excess liquid from altering the texture of your bars.
2. Keep Butter Cold
- Cold butter is essential for a crisp, crumbly topping. Cut it into small cubes and incorporate it quickly into the oat mixture.
- Avoid over-handling the mixture, as warm hands can melt the butter too early, resulting in a dense, less flaky crust.
3. Don’t Overmix the Oat Crust
- Stir just until the oats and butter are combined with the sugar and flour. Overmixing can make the crust tough rather than tender and crumbly.
- Using a pastry blender or fork makes this step easier and helps maintain a light texture.
4. Balance Sweetness and Tartness
- Rhubarb is naturally tart, which pairs perfectly with the sweet oat topping. Taste your filling before assembling and adjust sugar as needed—too much sugar can overpower the filling, while too little leaves it too sour.
- For a milder flavor, consider mixing rhubarb with strawberries or apples to add natural sweetness.
5. Press the Base Layer Firmly
- About two-thirds of your oat mixture should be pressed firmly into the pan to form a solid base. This ensures the bars hold together well after baking and slicing.
- Avoid pressing too hard, as you still want some lightness and flakiness in the crust.
6. Bake Until Golden and Bubbling
- Monitor the bars closely in the final 5–10 minutes of baking. Look for a golden brown topping and bubbling filling along the edges—these are signs of perfectly baked bars.
- Baking times may vary slightly depending on your oven, so keep an eye on them for optimal results.
7. Cool Completely Before Slicing
- Allow the bars to cool in the pan to let the rhubarb filling set fully, making slicing easier and preventing the filling from running.
- For clean cuts, use a sharp knife, and for extra precision, warm the knife slightly under hot water and wipe dry between slices.
8. Experiment with Optional Add-Ins
- Add a ½ cup of chopped nuts like walnuts or pecans for extra crunch.
- Sprinkle cinnamon or nutmeg into the oat mixture for a warm, aromatic flavor.
- Swap some rhubarb for strawberries for a naturally sweeter filling.
9. Glaze or Dust for Extra Appeal
- For a finishing touch, drizzle a simple powdered sugar glaze or dust with powdered sugar before serving.
- This adds visual appeal and an extra hint of sweetness without overpowering the tart rhubarb.
Pro Tip: The Amish Oatmeal Rhubarb Bars Recipe is versatile—feel free to experiment with your favorite seasonal fruits or toppings while keeping the classic oat-rhubarb balance intact.
Health Benefits of Amish Oatmeal Rhubarb Bars Recipe
The Amish Oatmeal Rhubarb Bars Recipe is not only a delicious dessert but also a treat that offers several nutritional advantages. By combining wholesome ingredients like oats, rhubarb, and nuts, these bars provide benefits that go beyond flavor. Here’s why incorporating this dessert into moderation can be a smart choice:
1. High in Dietary Fiber
- Rolled oats are a rich source of soluble and insoluble fiber, which aids digestion and helps maintain healthy bowel movements.
- Fiber helps regulate blood sugar levels, slows down the absorption of sugar, and promotes a feeling of fullness, which can support weight management.
- Oats also contain beta-glucan, a type of fiber linked to improved heart health.
2. Packed with Vitamins and Minerals
- Rhubarb is a low-calorie vegetable-fruit packed with essential nutrients like vitamin K, vitamin C, calcium, and potassium.
- Vitamin K supports healthy bones and proper blood clotting, while vitamin C is vital for immune function and skin health.
- Potassium helps maintain proper heart and muscle function.
3. Antioxidant-Rich Ingredients
- Both rhubarb and oats contain antioxidants, which help combat free radicals in the body.
- Antioxidants can support overall health, reduce inflammation, and contribute to healthy aging.
4. Controlled Natural Sweetness
- This recipe uses brown sugar and natural rhubarb sweetness, avoiding highly processed sugars.
- You can adjust the sugar content to your preference, creating a dessert that balances tart and sweet flavors while keeping added sugar at a healthier level.
5. Healthy Fats for Satiety and Flavor
- Butter in moderation provides healthy fats that contribute to satiety and enhance the rich, crumbly texture of the oat topping.
- Unlike heavy frostings or cream-based desserts, these bars offer indulgence without excessive added fats.
6. Energy-Boosting Ingredients
- The combination of oats and naturally sweetened rhubarb provides steady energy, making these bars suitable for breakfast, snacks, or an afternoon pick-me-up.
- They are ideal for active individuals looking for a quick, nutrient-dense snack that satisfies sweet cravings.
7. Customizable for Even Greater Health Benefits
- Add chopped nuts, seeds, or whole-grain flour to enhance protein, fiber, and micronutrient content.
- Substitute part of the sugar with natural sweeteners like honey or maple syrup for a slightly lower glycemic index.
- Mix in fresh berries or apples to increase vitamin content and natural sweetness.
8. Low-Calorie Serving Option
- A small portion of these bars provides a satisfying treat without excessive calories. Pairing with yogurt or fresh fruit can make a balanced breakfast or snack.
Pro Tip: Enjoying the Amish Oatmeal Rhubarb Bars Recipe as part of a balanced diet can satisfy your sweet tooth while still providing fiber, antioxidants, and essential vitamins. For an extra boost, top a bar with a spoonful of yogurt and fresh berries for a wholesome snack.
Frequently Asked Questions (FAQs)
1. What are Amish Oatmeal Rhubarb Bars recipe?
Amish Oatmeal Rhubarb Bars recipe are a traditional baked dessert featuring a buttery oatmeal crust, a sweet-tart rhubarb filling, and a crumbly oat topping. This classic Amish recipe combines simple, wholesome ingredients for a treat that is both nostalgic and easy to make.
2. Can I use frozen rhubarb in this recipe?
Yes! Frozen rhubarb works well for the Amish Oatmeal Rhubarb Bars Recipe. Thaw it completely and drain any excess liquid before mixing with sugar and cornstarch to prevent a soggy filling.
3. How do I store Amish Oatmeal Rhubarb Bars recipe?
Store cooled bars in an airtight container at room temperature for up to 2 days or in the refrigerator for up to 5 days. For longer storage, freeze individually wrapped bars for up to 3 months.
4. Can I make these bars ahead of time?
Absolutely! You can prepare the oat crust mixture and rhubarb filling up to 24 hours in advance. Keep them refrigerated separately, then assemble and bake when ready. This makes the Amish Oatmeal Rhubarb Bars Recipe perfect for busy schedules or holiday baking.
5. How can I make the bars sweeter or less tart?
If your rhubarb is very tart, add a little more sugar to the filling. Alternatively, mix rhubarb with sweeter fruits such as strawberries or apples for a balanced flavor while keeping the classic texture intact.
6. Can I add nuts or other toppings?
Yes! Chopped walnuts, pecans, or almonds can be added to the oat topping for extra crunch. You can also sprinkle cinnamon or nutmeg for additional warmth and flavor.
7. What is the best way to cut the bars without crumbling?
Let the bars cool completely before slicing. Use a sharp knife, and for cleaner cuts, warm the knife slightly under hot water and wipe it dry between slices. This ensures neat, perfectly shaped bars.
8. Can I make this recipe gluten-free?
Yes! Substitute gluten-free oats and all-purpose flour to make the Amish Oatmeal Rhubarb Bars Recipe safe for gluten-sensitive diets. The texture may be slightly different but still delicious.
Conclusion
The Amish Oatmeal Rhubarb Bars Recipe offers a delightful blend of textures and flavors, combining a buttery oat crust with a tangy rhubarb filling. This classic dessert is not only delicious but also versatile, allowing for various customizations to suit your taste preferences.
For more delectable dessert ideas, consider exploring these related recipes:
- Bushwacker Drink – A creamy, tropical cocktail perfect for summer gatherings.
- No-Bake Triple Chocolate Mousse Cake – A rich, indulgent dessert that requires no baking.
- Cheesecake Ice Cream Cake Recipe – A refreshing and creamy dessert combining cheesecake and ice cream.
Pro Tip: To elevate your Amish Oatmeal Rhubarb Bars recipe, serve them warm with a scoop of vanilla ice cream or a dollop of whipped cream for an extra touch of indulgence.
