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Easy Blueberry Crisp

Blueberry Crisp is the ultimate summer dessert! A warm, juicy blueberries topped with a buttery, golden oat crumble. Perfect for family dinners, summer gatherings, or cozy nights in, this easy recipe is a guaranteed crowd pleaser.
Course Dessert
Cuisine American
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Servings 6
Calories 320kcal
Cost $8–$10

Ingredients

For the filling

  • 4 cups fresh or frozen blueberries
  • cup granulated sugar
  • 1 tablespoon cornstarch
  • 1 tablespoon lemon juice
  • ½ teaspoon vanilla extract

For the crisp topping

  • ¾ cup old-fashioned rolled oats
  • ½ cup all-purpose flour
  • ½ cup brown sugar packed
  • ½ teaspoon ground cinnamon
  • ¼ teaspoon salt
  • ½ cup unsalted butter cold and cut into cubes

Instructions

  • Preheat oven to 375°F (190°C). Lightly grease your baking dish and set aside.
  • Make the blueberry filling by combining blueberries, sugar, cornstarch, lemon juice, and vanilla in a bowl. Stir until berries are well coated. Pour mixture evenly into the prepared dish.
  • Prepare the crisp topping: In another bowl, mix oats, flour, brown sugar, cinnamon, and salt. Add the cold butter and use a fork or pastry cutter to cut the butter into the dry ingredients until it forms pea-sized crumbles.
  • Sprinkle the topping evenly over the blueberry mixture, covering as much of the surface as possible.
  • Bake for 35–40 minutes, or until the topping is golden brown and the blueberries are bubbling around the edges.
  • Cool slightly before serving. Enjoy warm with a scoop of vanilla ice cream or a dollop of whipped cream.

Notes

  1. Use cold butter for the topping — this helps create a perfectly crumbly and crisp texture.
  2. Don’t overmix the topping — keeping some chunks of butter intact gives you that irresistible crunch.
  3. Frozen berries work great — just add 1 extra teaspoon of cornstarch to account for the extra moisture.
  4. Let it rest before serving — the filling thickens as it cools, making for cleaner servings.