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Easy Classic Rhubarb Crisp with Crunchy Oat Topping

Close-up of a freshly baked rhubarb crisp in a white baking dish, showing the bubbling fruit filling under a thick, golden crumble topping.
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I’m Alex, and I’m glad you are here. This easy rhubarb crisp recipe delivers the perfect balance of tart rhubarb and a buttery, crunchy oat topping. It is a simple, soul-satisfying dessert perfect for sharing.

Ingredients

Scale
  • 6 cups fresh rhubarb, cut into 1-inch pieces (or use frozen rhubarb)
  • 1 cup granulated sugar
  • 2 tablespoons all-purpose flour
  • 1 teaspoon vanilla extract
  • For the Topping:
  • 1 1/2 cups old-fashioned rolled oats
  • 1 cup all-purpose flour
  • 3/4 cup packed light brown sugar
  • 1/2 teaspoon ground cinnamon
  • 1/4 teaspoon salt
  • 1/2 cup (1 stick) cold unsalted butter, cut into small pieces

Instructions

  1. Preheat your oven to 375°F (190°C). Lightly grease a 9×9 inch baking dish or an equivalent 2-quart dish.
  2. Prepare the filling: In a large bowl, combine the cut rhubarb, granulated sugar, 2 tablespoons of flour, and vanilla extract. Toss gently until the rhubarb is evenly coated. Pour this mixture into your prepared baking dish and spread it into an even layer.
  3. Prepare the crunchy oat topping: In a separate medium bowl, mix together the rolled oats, 1 cup of flour, brown sugar, cinnamon, and salt.
  4. Cut in the cold butter: Add the cold, cubed butter to the dry topping ingredients. Use your fingertips or a pastry blender to cut the butter into the mixture until it resembles coarse crumbs, with some pea-sized pieces remaining. This creates the buttery crumble topping you want.
  5. Sprinkle the topping evenly over the rhubarb filling in the baking dish. Do not press it down.
  6. Bake for 40 to 50 minutes, or until the topping is golden brown and the rhubarb filling is bubbly and tender when pierced with a fork. If the topping browns too quickly, loosely cover the dish with foil for the last 10 minutes of baking.
  7. Remove the rhubarb crisp from the oven and let it cool on a wire rack for at least 15 minutes before serving.
  8. Serve warm, ideally with a scoop of vanilla ice cream for that classic taste of home.

Notes

  • If you use frozen rhubarb, do not thaw it first. You may need to add 5 to 10 minutes to the total baking time.
  • For an extra crunchy rhubarb crisp, ensure your butter is very cold when making the topping.
  • This dessert is a simple baked fruit dessert that pairs well with coffee or tea.

Nutrition

Find it online: https://www.purecookingjoy.com/easy-classic-rhubarb-crisp-recipe/

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