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Blackberry Pie Bars

Jammy Blackberry Pie Bars

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 22 reviews
  • Author: Laura Kasavan
  • Prep Time: 30 minutes
  • Cook Time: 55 minutes
  • Total Time: 1 hour 15 minutes
  • Yield: 12 bars
  • Category: Dessert
  • Method: Bake
  • Cuisine: American


These blackberry pie bars taste just like blackberry pie! With plenty of buttery crumbs and blackberries, you’ll love these easy blackberry crumb bars! Recipe makes 12 bars.


Crust & Crumbs

  • 2 cups (280 g) all-purpose flour
  • 1/4 tsp baking soda
  • 1/4 tsp salt
  • 1/4 tsp cinnamon
  • 3/4 cup (168 g) unsalted butter, melted
  • 1/2 cup (100 g) granulated sugar
  • 1/4 cup (50 g) light brown sugar
  • 1 tsp (4 g) vanilla extract
  • 1 tsp lemon zest

Blackberry Filling

  • 2 1/2 cups (425 g) blackberries
  • 3/4 cup (150 g) granulated sugar
  • 1/8 tsp salt
  • 3 Tbsp (24 g) cornstarch
  • 1 tsp lemon zest
  • 1/2 Tbsp (7 g) lemon juice


  1. Preheat oven to 350°F and line an 8-inch square baking pan with parchment paper.
  2. Make crust and crumble: Whisk together flour, baking soda, salt, and cinnamon in a medium bowl. Whisk together melted butter, sugar, brown sugar, vanilla, and lemon zest in a large bowl until combined. Add dry ingredients and fold in until incorporated. 
  3. Set aside 3/4 cup (220 g) of dough for topping. Chill until ready to use. Press remaining dough evenly into bottom of prepared baking pan.
  4. Bake crust for 14 to 16 minutes, until lightly golden and set. Transfer to a wire rack and cool for 15 minutes.
  5. Make filling: Combine blackberries, sugar, salt, cornstarch, lemon zest, and lemon juice in a heavy saucepan over medium-high heat. Bring to a boil, pressing firmly on berries to release juices, about 3 to 4 minutes. Reduce heat to low and simmer for 1 to 2 minutes, until filling is thickened and coats the back of a spoon. Remove pan from the heat and cool filling for 10 minutes.
  6. Spoon blackberry filling over cooled crust and crumble reserved dough over filling.
  7. Bake bars for another 40 minutes or until topping is golden and filling slightly bubbly. Cool completely in pan on a wire rack.
  8. Just before cutting, chill in the freezer for 15 minutes. Carefully lift parchment and place bars on a cutting board; cut into squares with a sharp knife.
  9. Store crumb bars in an airtight container in the refrigerator up to 3 days.


Blackberries: You can use fresh or frozen blackberries in these bars. If using frozen blackberries, add directly to the saucepan from the freezer and cook as directed (do not thaw).

Gluten Free Bars: Use your favorite 1-1 gluten-free flour.

Larger Batch: For a larger batch of crumb bars, double the recipe and bake in a 9 x 13-inch rectangular baking pan.

Freeze Crumb Bars: To freeze crumb bars, let cool completely. Once cooled, place bars on a baking sheet and freeze flat for 1 hour. Transfer bars to an airtight container and freeze up to 8 weeks. Thaw bars overnight in the refrigerator before serving.