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Blueberry Crumble Bars | Grandbaby Cakes
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4.45 from 34 votes

Blueberry Crumble Bars

These perfectly simple to make Blueberry Crumble Bars are filled with plump, juicy and sweet citrus hinted blueberries are layered on top of a shortbread crust and topped with a delicious buttery crumble!
Prep Time20 mins
Cook Time38 mins
Total Time58 mins
Course: Dessert
Cuisine: American
Servings: 12 bars
Calories: 230kcal


For the Crumble and Crust:

  • 1 1/2 cups all-purpose flour
  • 1/2 cup granulated sugar
  • 1/2 teaspoon baking powder
  • Pinch salt
  • 10 tablespoons unsalted butter cold and cut into cubes
  • 1 large egg yolk
  • 1 tablespoon cold water

For the Blueberry Filling:

  • 2 cups fresh blueberries
  • 2 tablespoons lime juice
  • 2 tablespoons all-purpose flour
  • 1/2 cup granulated sugar
  • 1/4 teaspoon ground cinnamon
  • 1 teaspoon vanilla extract


For the Crumble and Crust:

  • Preheat the oven to 375 degrees F. Prepare a 8×8-inch baking pan with the non-stick coating of your choice.
  • For the crumble and crust, whisk together flour, sugar, baking powder and salt.
  • Next, cut in the cold butter using two forks or a pastry cutter then slowly mix in the egg yolk and cold water. Don't worry if the dough seems really crumbly. It should be!
  • Next take half of the crumble mixture and press into the prepared pan. The rest should be saved for the top of the bars.

For the Blueberry Filling:

  • Stir together blueberries, lime juice, flour, sugar, cinnamon and vanilla until combined.
  • To assemble, evenly add blueberry filling to top of crust.
  • Next sprinkle the remaining crumble over the top of the blueberry filling.
  • Bake for 30-38 minutes or until golden brown and set.
  • Cool bars to room temperature then cut and serve.


Tip: if you want to use frozen fruit, no need to thaw the blueberries.  Just roll them in a little flour so it soaks up some of the additional wetness as it bakes in the oven.


Calories: 230kcal | Carbohydrates: 33g | Protein: 2g | Fat: 10g | Saturated Fat: 6g | Cholesterol: 40mg | Sodium: 3mg | Potassium: 52mg | Fiber: 1g | Sugar: 19g | Vitamin A: 325IU | Vitamin C: 3.1mg | Calcium: 16mg | Iron: 0.9mg