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Square blueberry crumble bars on parchment paper with blueberries around it

Blueberry Crumb Bars

A bright and delicious dessert that is super easy to make! Sweet and juicy blueberry filling sandwiched between buttery crumbles...it's the perfect sweet treat, snack...or even breakfast!
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Course: Dessert
Cuisine: American
Prep Time: 15 minutes
Cook Time: 35 minutes
Cooling time: 30 minutes
Total Time: 40 minutes
Servings: 9 people
Calories: 349kcal
Author: MinShien


  • 2 cups fresh blueberries
  • 1/4 cup granulated sugar
  • 2 tsp cornstarch
  • 1 tsp lemon juice optional
  • 2 cups flour
  • 1/2 tsp baking powder
  • 1/4 tsp salt
  • 3/4 cups cold unsalted butter
  • 2/3 cup brown sugar
  • 1 large egg
  • 1/2 tsp vanilla extract


  • Pre-heat oven to 350 degrees F.
  • In a bowl, combine blueberries, sugar, corn starch, and lemon juice (optional). Mix well and set aside.
  • In a large bowl, combine flour, baking powder and salt.
  • Slice cold unsalted butter (important: make sure it is cold!) into multiple chunks and add to flour mixture.
  • Use a pastry cutter to cut butter into dry mixture until smaller crumbs are formed. Or, using a food processor, pulse until small crumbs are formed.
  • Mix together wet ingredients in a separate bowl – brown sugar, egg and vanilla extract. Then add wet ingredients into buttery dry crumble mixture. Mix well – mixture should be slightly crumbly.
  • Bring ~3/4 of crumbly mixture to the bottom of a 8″ x 8″ baking pan lined with parchment paper. Press mixture using spatula onto pan to form a layer of crumb pastry.
  • Add blueberry mixture onto the layer of crumb pastry, and spread it out evenly.
  • Sprinkle the top of the blueberry mixture with the rest of the crumbles.
  • Bake in the oven for 35-40 minutes.
  • Remove from oven and let it cool for 5-10 minutes. Then lift parchment paper and bring pastry out from the pan. Let it cool for another 25-30 minutes.
  • Cut into 9 square bars. Serve and enjoy!


Calories: 349kcal | Carbohydrates: 48g | Protein: 4g | Fat: 16g | Saturated Fat: 10g | Cholesterol: 61mg | Sodium: 107mg | Potassium: 89mg | Fiber: 2g | Sugar: 25g | Vitamin A: 520IU | Vitamin C: 3mg | Calcium: 42mg | Iron: 2mg
Did you make this recipe?Take a pic and tag me at @joyous.apron, or hashtag #joyousapron on Instagram!