Soft rhubarb bars with an oatmeal crumb base and a sweet-tangy cooked rhubarb filling are a delightful treat. These Amish Oatmeal Rhubarb Bars (with crumb topping) are perfect for any occasion, from family gatherings to cozy nights at home. The unique combination of flavors and textures makes this dessert stand out, offering both comfort and satisfaction in every bite.
Why You’ll Love This Recipe
- Easy to Make: With simple ingredients and straightforward steps, you can whip these bars up quickly.
- Deliciously Balanced Flavor: The sweet-tangy rhubarb filling pairs perfectly with the crunchy oatmeal topping.
- Versatile Dessert: Great for potlucks, picnics, or just a treat at home, these bars please any crowd.
- Perfect Texture: The crumb topping provides a satisfying crunch that contrasts beautifully with the soft filling.
- Make Ahead: These bars can be prepared in advance and stored for later enjoyment.
Tools and Preparation
Before diving into this recipe, gather your tools to make the process smooth and enjoyable. Having the right equipment on hand will help you create these delicious bars effortlessly.
Essential Tools and Equipment
- 8×8-inch baking dish
- Mixing bowls
- 2-quart saucepan
- Measuring cups and spoons
- Wooden spoon or spatula
Importance of Each Tool
- 8×8-inch baking dish: This size is perfect for evenly baking the rhubarb bars while maintaining their shape.
- Mixing bowls: Essential for combining ingredients without mess; opt for various sizes for different steps.
- 2-quart saucepan: Perfect for cooking the rhubarb filling evenly without overflowing.
Ingredients
Crumb Topping/Base
- 1 cup old fashioned rolled oats
- 3/4 cup all-purpose flour
- 1/2 cup butter, softened
- 1/8 teaspoon salt
- 1/8 teaspoon baking soda
- 1/2 cup brown sugar, packed
Rhubarb Filling
- 1 1/2 cups chopped rhubarb
- 3/4 cup granulated sugar
- 1 tablespoon cornstarch, heaping
- 2 tablespoons water
- 1/2 teaspoon vanilla extract
How to Make Amish Oatmeal Rhubarb Bars (with crumb topping)
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C) to ensure it’s ready when your bars are assembled.
Step 2: Prepare the Crumb Topping/Base
In a medium mixing bowl:
1. Combine old fashioned rolled oats, all-purpose flour, butter, salt, baking soda, and brown sugar.
2. Mix until coarse crumbs form.
Step 3: Cook the Rhubarb Filling
In a 2-quart saucepan:
1. Combine chopped rhubarb, granulated sugar, cornstarch, and water.
2. Simmer over medium-high heat for about 5-10 minutes, stirring frequently until the rhubarb softens and becomes clear.
3. Remove from heat and stir in vanilla extract. Let cool for about 10 minutes until slightly thickened.
Step 4: Assemble the Bars
In a greased or parchment-lined 8×8-inch baking dish:
1. Press all but 2/3 cup of the oatmeal crumbs into the bottom firmly, ensuring no cracks remain.
2. Pour the warm rhubarb filling over the crumb base.
3. Sprinkle the remaining crumbs evenly over the top.
Step 5: Bake
Bake in the preheated oven for about 30-40 minutes, until golden on the bottom and when both filling and topping are set.
Step 6: Cool and Serve
Allow cooling completely before cutting into bars to enjoy your homemade Amish Oatmeal Rhubarb Bars (with crumb topping).
How to Serve Amish Oatmeal Rhubarb Bars (with crumb topping)
Serving Amish Oatmeal Rhubarb Bars can elevate your dessert experience. These bars are versatile and can be enjoyed in various ways, making them perfect for any occasion.
With a Scoop of Ice Cream
- Vanilla ice cream pairs wonderfully with the sweet-tangy filling, adding a creamy contrast.
- A scoop of whipped cream can also enhance the overall flavor.
As Breakfast Treats
- Serve a bar alongside your morning coffee or tea for a delightful breakfast option.
- They can also be enjoyed as a quick snack on busy mornings.
Drizzled with Caramel Sauce
- A warm drizzle of caramel sauce adds an extra layer of sweetness that complements the rhubarb nicely.
- This serves as an elegant touch for special occasions.
Topped with Fresh Fruit
- Garnish with fresh strawberries or raspberries for added color and flavor.
- This combination brightens up the dish and adds freshness.
With a Side of Yogurt
- Pairing these bars with Greek yogurt creates a balance between sweet and tart.
- This combo is perfect for brunch gatherings.

How to Perfect Amish Oatmeal Rhubarb Bars (with crumb topping)
To make your Amish Oatmeal Rhubarb Bars truly exceptional, follow these tips for best results.
- Use Fresh Rhubarb: Freshly chopped rhubarb yields better flavor and texture compared to frozen options.
- Don’t Overmix Crumb Base: Mix until just combined to maintain a nice crumbly texture in the base.
- Let Filling Cool Slightly: Allow the rhubarb filling to cool before pouring it over the base; this helps it set better.
- Press Firmly: Ensure you press the crumb base firmly into the baking dish to prevent cracks during baking.
- Check for Doneness: Look for golden edges and a set filling before removing from the oven for perfect bars.
- Cool Completely Before Slicing: Letting the bars cool ensures cleaner cuts and better presentation.
Best Side Dishes for Amish Oatmeal Rhubarb Bars (with crumb topping)
Complementing your Amish Oatmeal Rhubarb Bars with side dishes enhances your dessert experience. Here are some great options:
- Whipped Cream: Light and airy whipped cream balances out the sweetness of the bars beautifully.
- Fresh Berries: A mix of blueberries or blackberries adds a burst of freshness that contrasts nicely with the rhubarb.
- Fruit Salad: A refreshing fruit salad provides a healthy side that pairs well with rich desserts.
- Cheese Platter: A selection of mild cheeses offers a savory counterpart to the sweet oatmeal bars.
- Coffee or Tea: Hot beverages complement these bars, enhancing their sweet-tangy flavors while providing warmth.
- Ice Cream Float: Combine soda and vanilla ice cream for an exciting drink that pairs perfectly with dessert.
Common Mistakes to Avoid
When making Amish Oatmeal Rhubarb Bars (with crumb topping), it’s easy to overlook some details that can affect the final product. Here are common mistakes to be aware of:
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Using fresh rhubarb: Avoid using frozen rhubarb directly without thawing. Fresh rhubarb provides the best texture and flavor, while frozen may lead to a watery filling.
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Not measuring ingredients accurately: Ensure you measure your oats, flour, sugar, and butter correctly. Incorrect measurements can alter the sweetness and texture of your bars.
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Skipping the cooling time: Do not skip cooling the rhubarb filling before pouring it over the crumb base. This helps thicken the filling and prevents it from soaking into the crust.
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Overmixing the crumb topping: Be cautious not to overmix when creating your crumb topping. Aim for a coarse texture to ensure a delightful crunch when baked.
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Not pressing down the crumb base firmly enough: Make sure to press most of the crumb mixture firmly into the baking dish. This step helps form a solid base and prevents cracking.
Storage & Reheating Instructions
Refrigerator Storage
- Store Amish Oatmeal Rhubarb Bars (with crumb topping) in an airtight container.
- They can last in the refrigerator for up to 5 days.
Freezing Amish Oatmeal Rhubarb Bars (with crumb topping)
- Wrap individual bars tightly in plastic wrap or aluminum foil.
- Place them in a freezer-safe container or bag for up to 3 months.
Reheating Amish Oatmeal Rhubarb Bars (with crumb topping)
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Oven: Preheat your oven to 350°F (175°C). Place bars on a baking sheet and warm for about 10-15 minutes.
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Microwave: Heat bars in 10-15 second intervals until warmed through. Be careful not to overheat as they can become soggy.
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Stovetop: Use a skillet over medium-low heat. Place bars in and cover with a lid, heating for about 5-7 minutes until warm.
Frequently Asked Questions
Can I use other fruits instead of rhubarb for these bars?
Yes! While rhubarb gives a unique tartness, you can substitute with fruits like strawberries or blueberries for different flavors.
How do I know when my Amish Oatmeal Rhubarb Bars are done baking?
Your bars are ready when they’re golden on top and set in the center. A slight jiggle is acceptable but avoid liquid filling.
Can I add nuts or seeds to my oatmeal crumb topping?
Absolutely! Adding chopped nuts or seeds can enhance flavor and add extra crunch to your Amish Oatmeal Rhubarb Bars (with crumb topping).
What should I serve with these bars?
These bars pair well with whipped cream or vanilla ice cream. A scoop on top makes for an even more delightful dessert!
Final Thoughts
Amish Oatmeal Rhubarb Bars (with crumb topping) make for a deliciously balanced dessert that combines sweet and tangy flavors with delightful textures. Their versatility allows you to customize them based on available fruits or add-ins like nuts. Give this recipe a try; it’s sure to become a favorite in your household!
Amish Oatmeal Rhubarb Bars (with crumb topping)
- Total Time: 50 minutes
- Yield: About 9 servings 1x
Description
Indulge in the delightful flavors of Amish Oatmeal Rhubarb Bars, a perfect blend of sweet and tangy rhubarb filling layered atop a crunchy oatmeal crumb base. These bars are not only easy to make but also versatile enough for any occasion—from family gatherings to cozy nights at home. With each bite, you’ll experience the comforting texture of the crumb topping contrasting beautifully with the soft, cooked rhubarb filling. Whether served warm with ice cream or enjoyed as a snack, these bars are sure to be a hit!
Ingredients
- 1 cup old-fashioned rolled oats
- 3/4 cup all-purpose flour
- 1/2 cup butter, softened
- 1/8 teaspoon salt
- 1/8 teaspoon baking soda
- 1/2 cup brown sugar
- 1 1/2 cups chopped rhubarb
- 3/4 cup granulated sugar
- 1 tablespoon cornstarch
- 2 tablespoons water
- 1/2 teaspoon vanilla extract
Instructions
- Preheat oven to 350°F (175°C).
- In a mixing bowl, combine oats, flour, butter, salt, baking soda, and brown sugar until coarse crumbs form.
- In a saucepan over medium heat, mix rhubarb, granulated sugar, cornstarch, and water. Cook until rhubarb is soft and clear (about 5-10 minutes). Stir in vanilla and let cool slightly.
- Press most of the crumb mixture into an 8×8-inch greased baking dish. Pour cooled rhubarb filling over the base and sprinkle remaining crumbs on top.
- Bake for 30-40 minutes until golden brown and set. Allow to cool completely before cutting into bars.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 bar (60g)
- Calories: 210
- Sugar: 12g
- Sodium: 90mg
- Fat: 10g
- Saturated Fat: 6g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 20mg




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