Old Fashioned Crisp: Easy Rhubarb Dessert Everyone Loves

Old Fashioned Crisp is the kind of dessert that brings comfort, nostalgia, and bold flavor to your table. This classic rhubarb treat blends sweet and tangy fruit with a buttery crumble topping, creating a timeless favorite that works perfectly for spring and summer gatherings.

Story 

I still remember the first time I made Old Fashioned Crisp from an old community cookbook. The handwritten notes and simple ingredients instantly reminded me of how recipes used to be shared—passed down with care and cooked with love. Over the years, this Old Fashioned Crisp has become a regular in my kitchen, especially when rhubarb season arrives. It’s easy to prepare, yet it delivers a rich flavor that feels special every time. Many people also call it rhubarb crunch, and honestly, that name fits perfectly. Whether you serve it at a family dinner or bring it to a potluck, this Old Fashioned Crisp always earns compliments as a true family favorite dessert that defines summer fruit baking.

Ingredients

  • 6 cups sliced rhubarb
  • 1 cup granulated sugar
  • 2 tablespoons cornstarch
  • 1/2 cup water
  • 1 teaspoon vanilla extract
  • 3/4 cup brown sugar
  • 3/4 cup all-purpose flour
  • 1/2 cup quick oats
  • 1 teaspoon cinnamon
  • 1/3 cup melted butter

Step-by-Step Instructions

Preparing the Ingredients

Start by preheating your oven to 350°F and greasing an 8-inch baking dish so nothing sticks later. Then, slice the rhubarb into even pieces to help it cook evenly. After that, place all the rhubarb into the prepared dish and spread it out so it forms an even base layer.

Cooking Instructions

In a saucepan over medium-high heat, combine the granulated sugar, cornstarch, and water, then bring the mixture to a boil while stirring. Once it thickens after about five minutes, stir in the vanilla extract and remove it from heat before pouring it evenly over the rhubarb. Next, mix the brown sugar, flour, oats, cinnamon, and melted butter in a bowl until crumbly, then sprinkle this topping evenly across the fruit. Finally, bake for 55 to 60 minutes until the top turns golden and the filling bubbles, then let it cool slightly before serving.

Tips for Perfect Results

Common Mistakes to Avoid

Avoid skipping the thickening step on the stovetop because the filling will turn watery instead of rich and glossy. Also, do not overload the topping with too much butter, since that can make it greasy instead of crumbly. Finally, make sure you bake long enough so the rhubarb softens fully and the topping develops a crisp texture.

Pro Tips for Better Flavor

For a deeper flavor, try mixing a small portion of strawberries with the rhubarb to balance the tartness. You can also add a pinch of nutmeg along with cinnamon for a warmer taste. If you want extra crunch, sprinkle a few additional oats on top right before baking.

Serving and Storage

How to Serve

Serve Old Fashioned Crisp warm with a scoop of vanilla ice cream or a dollop of whipped cream for the best experience. The contrast between the warm fruit and cold topping creates a rich and satisfying dessert that works for both casual meals and special occasions.

Old Fashioned Crisp

How to Store Leftovers

Store leftovers in an airtight container in the refrigerator for up to three days. When reheating, warm individual portions in the microwave or place the dish in the oven to bring back the crisp topping texture.

Conclusion

Old Fashioned Crisp stands out as a simple yet delicious dessert that never goes out of style. With its sweet-tart filling and buttery topping, it delivers comfort in every bite. Once you try this recipe, it will quickly become one of your go-to desserts for any season.

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Frequently Asked Questions

Can I use frozen rhubarb instead of fresh?

Yes, you can use frozen rhubarb, but thaw and drain it first to remove excess moisture. This step helps maintain the proper texture and prevents the filling from becoming too watery.

Can I double this recipe?

Absolutely, you can double the recipe and bake it in a 9×13-inch dish. Just keep an eye on the baking time, as it may need a few extra minutes to cook through properly.

What other fruits can I add?

You can mix in strawberries, apples, or even blueberries with the rhubarb. These combinations add natural sweetness and create new flavor variations while keeping the classic crisp texture.

Print
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Old Fashioned Crisp

Old Fashioned Crisp


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  • Author: Amanda Hartwellen
  • Total Time: 1 hour 20 minutes
  • Yield: 9 servings 1x

Description

Old fashioned rhubarb crisp with a sweet and tangy filling and a buttery oat crumble topping, perfect for a family dessert.


Ingredients

Scale
  • 6 cups sliced rhubarb
  • 1 cup granulated sugar
  • 2 tablespoons cornstarch
  • 1/2 cup water
  • 1 teaspoon vanilla extract
  • 3/4 cup brown sugar
  • 3/4 cup all purpose flour
  • 1/2 cup quick oats
  • 1 teaspoon cinnamon
  • 1/3 cup melted butter

Instructions

  1. Preheat oven to 350°F and grease an 8 inch baking dish
  2. Place sliced rhubarb in the baking dish evenly
  3. Combine sugar, cornstarch, and water in a saucepan and bring to a boil
  4. Reduce heat and cook until thickened, about 5 minutes
  5. Stir in vanilla extract and pour mixture over rhubarb
  6. Mix brown sugar, flour, oats, cinnamon, and melted butter until crumbly
  7. Sprinkle topping evenly over rhubarb
  8. Bake for 55 to 60 minutes until golden and bubbly
  9. Cool slightly and serve with ice cream or whipped cream

Notes

  1. Refrigerate leftovers in an airtight container for up to three days
  2. Double the recipe for a 9×13 inch baking dish
  3. Try mixing in other fruits like strawberries for variation
  • Prep Time: 10 minutes
  • Cook Time: 1 hour 10 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 296
  • Sugar: 41
  • Sodium: 64
  • Fat: 7
  • Saturated Fat: 4
  • Unsaturated Fat: 3
  • Trans Fat: 0
  • Carbohydrates: 57
  • Fiber: 2
  • Protein: 3
  • Cholesterol: 18

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