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Blueberry Crumble Bars

Blueberry Crumble Bars

These Blueberry Crumble Bars are buttery, fruity, and layered with juicy blueberry filling and golden crumble topping.
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Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings: 12 bars
Calories: 320
Ingredients Method Notes

Ingredients
  

  • For the Crust and Crumble
  • 2 cups all-purpose flour
  • 1 cup granulated sugar
  • 1 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1 cup unsalted butter melted
  • 1 large egg
  • 1 teaspoon vanilla extract
  • For the Blueberry Filling
  • 3 cups fresh or frozen blueberries
  • 1/2 cup granulated sugar
  • 2 tablespoons cornstarch
  • 1 tablespoon lemon juice
  • 1 teaspoon lemon zest

Method
 

  1. Preheat the oven to 350°F (175°C) and line a 9x9-inch baking pan with parchment paper for easier removal and cleanup.
  2. In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt until evenly combined.
  3. Add the melted butter, egg, and vanilla extract to the dry ingredients. Stir everything together until crumbly dough forms with small buttery crumbs throughout the mixture.
  4. Reserve about 1 cup of the crumble mixture for the topping and press the remaining dough evenly into the bottom of the prepared baking pan to create the crust layer.
  5. In another bowl, combine the blueberries, sugar, cornstarch, lemon juice, and lemon zest. Toss gently until the blueberries are fully coated and the cornstarch is evenly distributed.
  6. Spread the blueberry mixture evenly over the prepared crust layer, making sure the berries are spread all the way to the edges for even flavor in every bite.
  7. Sprinkle the reserved crumble mixture evenly over the blueberry layer, covering most of the fruit while still allowing some blueberry filling to show through.
  8. Bake for 40–45 minutes or until the crumble topping becomes lightly golden brown and the blueberry filling is bubbling around the edges.
  9. Remove the pan from the oven and allow the bars to cool completely before slicing. This helps the filling set properly and creates cleaner bars.
  10. Slice into squares and serve as is or dust lightly with powdered sugar before serving if desired.

Notes

  • Fresh or frozen blueberries both work well in this recipe.
  • If using frozen blueberries, do not thaw them first.
  • Let the bars cool completely before slicing for cleaner layers.
  • Lemon zest adds extra brightness to the blueberry flavor.
  • Parchment paper helps lift the bars easily from the pan.
  • The crumble topping should stay slightly chunky for the best texture.
  • Store leftovers in the refrigerator for freshness.