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Blueberry Crumble Bars are filled with juicy blueberries and topped with a buttery crumble.
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Blueberry Crumble Bars

Blueberry crumble bars are made with juicy blueberries and a butter crumble topping. It's a delicious summer dessert!
Course Dessert
Cuisine American
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Servings 16 bars
Calories 255kcal
Author Ashley C.

Ingredients

Crust & Crumble Topping

  • 1 1/2 cups all-purpose flour
  • 1 1/2 cups old fashioned rolled oats
  • 3/4 cups light brown sugar
  • 1/2 teaspoon cinnamon
  • 1/2 teaspoon kosher salt
  • 1 cup cold butter ,cubed (2 sticks)

Blueberry Filling

  • 1/2 cup granulated sugar
  • 3 tablespoons cornstarch
  • 2 1/2 cups blueberries
  • 1 tablespoon lemon juice
  • 1 teaspoon lemon zest

Instructions

Crust & Crumble Topping

  • Line a 9×9 pan with parchment paper and coat with nonstick spray. Set aside.
  • In a large bowl, whisk together flour, oars, brown sugar, cinnamon and salt. Add in the cold butter and using a pastry blender, cut the butter into the mixture until it resembles very coarse sand.
  • Divide the mixture in half and press half into the bottom of the prepared pan to form the crust. Set aside both the pan and bowl with remaining mixture.

Filling

  • In a large bowl, whisk together the granulated sugar and cornstarch. Add in the blueberries and coat in the sugar mixture. Add in the lemon juice and zest. Stir gently  to combine.
  • Spread the blueberries on top of the crust. Sprinkle remaining crust mixture evenly on top of the blueberries and press lightly.
  • Refrigerate the pan for 30 minutes.
  • Preheat the oven to 350° F. Bake for 35 to 40 minutes until the fruit starts to bubble. Remove from oven and cool completely before cutting.

Notes

  • Use cold butter.
  • Let the bars cool completely. You can even chill them in the fridge to help them maintain their shape. If you eat them too warm, they will be messy. 
  • Store bars in a sealed container for up to 4 days.
Storing Leftovers: Leftover blueberry crumble bars can be stored in an airtight container for 4 days outside of the fridge. 
Freezing Leftovers: Wrapped cooled blueberry bars in plastic wrap, then add to a freezer-safe bag or airtight container and freeze for up to 4 months. Let them thaw in the fridge overnight before serving. 
Source: If You Give a Blonde a Kitchen

Nutrition

Calories: 255kcal | Carbohydrates: 35g | Protein: 2g | Fat: 12g | Saturated Fat: 7g | Cholesterol: 30mg | Sodium: 177mg | Potassium: 74mg | Fiber: 1g | Sugar: 18g | Vitamin A: 365IU | Vitamin C: 2.8mg | Calcium: 19mg | Iron: 1mg