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Blackberry Crumble Recipe

foxyrecipes
Juicy fresh blackberries baked under a crisp, buttery oat crumble topping a simple, rustic dessert that comes together in about an hour with no pastry to roll.
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Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Course Dessert
Cuisine British and American
Servings 6 pieces
Calories 310 kcal

Equipment

  • Large mixing bowls
  • Baking dish
  • pastry cutter or fingertips

Ingredients
  

For the Blackberry Filling:

  • 5 cups fresh blackberries
  • 2 tbsp granulated sugar
  • 1 tbsp lemon juice
  • 1 tbsp cornstarch
  • 1 tsp vanilla extract

For the Crumble Topping:

  • 1 cup all-purpose flour
  • 1 cup old-fashioned oats
  • ¾ cup brown sugar
  • ½ tsp salt
  • ½ tsp cinnamon
  • ½ cup cold unsalted butter cut into small cubes

Instructions
 

  • Prepare the Blackberry Filling
    Preheat the oven to 350°F and lightly grease a baking dish. In a large mixing bowl, combine the fresh blackberries with the granulated sugar, lemon juice, cornstarch, and vanilla extract.
    Gently fold everything together until the berries are evenly coated, taking care not to crush them too much.
    blackberry crumble recipe stage 1
  • Make the Crumble Topping
    In a separate bowl, combine the flour, oats, brown sugar, salt, and cinnamon, stirring until evenly mixed. Add the cold butter cubes and use your fingertips or a pastry cutter to work them into the dry ingredients until the mixture resembles coarse crumbs.
    Avoid overmixing the small, uneven butter pieces are what create the crisp, golden topping.
    blackberry crumble recipe stage 2
  • Assemble and Bake
    Pour the blackberry filling into the prepared baking dish and spread it into an even layer. Sprinkle the crumble topping evenly over the top without pressing it down, keeping it loose so it bakes into a crisp crust.
    Bake for 40 to 45 minutes, until the topping is golden brown and the filling is bubbling around the edges. Let the crumble cool for 10 to 15 minutes before serving.
    blackberry crumble recipe stage 3

Notes

  • Use ripe blackberries for the best, most concentrated flavor.
  • Keep the butter cold going into the topping mixture — this is what creates a crisper, more textured crumble once baked.
  • Avoid overmixing the crumble topping so it stays loose and crumbly rather than forming a dough.
  • Bake until you see the filling bubbling around the edges, which is the clearest sign the fruit has cooked through and thickened properly.
  • Let the crumble rest for about ten minutes after baking so the filling has time to set slightly before serving.
  • A pinch of extra cinnamon or nutmeg in the filling adds warmth without overpowering the berries.
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