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Easy Strawberry Rhubarb Crumble Recipe with Homemade Oat Streusel Topping

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A simple and rustic dessert combining tart rhubarb and sweet strawberries under a crunchy, buttery oat streusel topping. Perfect for a quick, comforting treat that’s ready in under 45 minutes.

Ingredients

Scale
  • 3 cups fresh strawberries, hulled and halved (about 450g / 1 lb)
  • 3 cups rhubarb, chopped into 1/2-inch pieces (about 375g / 13 oz)
  • 3/4 cup granulated sugar (150g)
  • 2 tablespoons cornstarch (or arrowroot powder for gluten-free)
  • 1 teaspoon vanilla extract
  • 1 tablespoon fresh lemon juice
  • 1 cup old-fashioned rolled oats (90g)
  • 1/2 cup all-purpose flour (60g) – use gluten-free blend if needed
  • 1/2 cup light brown sugar, packed (110g)
  • 1/4 teaspoon ground cinnamon (optional)
  • 1/4 teaspoon salt
  • 1/2 cup unsalted butter, cold and cubed (115g / 1 stick)

Instructions

  1. Preheat your oven to 375°F (190°C).
  2. In a large bowl, gently toss the chopped rhubarb and halved strawberries with granulated sugar, cornstarch, vanilla extract, and lemon juice until evenly coated without smashing the berries.
  3. Transfer the fruit mixture to a 9-inch (23cm) baking dish and spread evenly.
  4. In another bowl, combine rolled oats, flour, brown sugar, cinnamon, and salt.
  5. Add the cold, cubed butter to the dry ingredients. Using a pastry cutter or two forks, cut the butter into the mixture until it resembles coarse crumbs with pea-sized bits of butter.
  6. Sprinkle the oat streusel topping evenly over the fruit filling.
  7. Bake for 35 to 40 minutes until the topping is golden brown and the fruit is bubbling around the edges. If the topping browns too quickly, loosely cover with foil halfway through baking.
  8. Cool on a wire rack for at least 15 minutes before serving to allow the filling to thicken.

Notes

Keep butter cold when making the streusel to ensure a crumbly texture. Avoid overmixing the fruit filling to keep berries intact. Use old-fashioned rolled oats for best texture. If topping browns too fast, cover with foil. For dairy-free, substitute butter with coconut oil or plant-based butter. Can be made gluten-free by using gluten-free flour.

Nutrition

Keywords: strawberry rhubarb crumble, oat streusel topping, easy dessert, summer dessert, fruit crumble, homemade crumble, quick dessert

Find it online: https://katedishes.com/easy-strawberry-rhubarb-crumble-recipe-with-homemade-oat-streusel-topping/