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Crispy Triple Berry Crumble Bars

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These crispy triple berry crumble bars feature a crunchy oat streusel topping, a firm caramelized base, and a juicy triple berry filling. Perfect for a handheld, portable snack or dessert with a satisfying texture contrast.

Ingredients

Scale
  • 1 ¾ cups all-purpose flour (220 g)
  • 1 cup rolled oats (90 g)
  • ½ cup packed brown sugar (100 g)
  • ¼ cup granulated sugar (50 g)
  • 1 cup unsalted butter, cold and cubed (227 g)
  • 1 tsp baking powder
  • ½ tsp salt
  • 1 cup fresh or frozen blueberries (150 g)
  • 1 cup fresh or frozen raspberries (120 g)
  • 1 cup fresh or frozen blackberries (140 g)
  • ½ cup granulated sugar (100 g)
  • 2 tbsp lemon juice (30 ml)
  • 2 tbsp cornstarch (15 g)
  • 1 tsp lemon zest (optional)

Instructions

  1. Preheat your oven to 350°F (175°C). Line a 9×13 inch (23×33 cm) baking pan with parchment paper, leaving some overhang for easy removal.
  2. In a large bowl, combine flour, rolled oats, brown sugar, granulated sugar, baking powder, and salt. Mix well.
  3. Add cold cubed butter and cut it into the dry ingredients using a pastry cutter or fingertips until mixture resembles coarse crumbs with some pea-sized chunks.
  4. Reserve about 1 ½ cups of the crumble mixture for the topping. Press the remaining mixture firmly and evenly into the bottom of the prepared pan to form the base layer.
  5. In a medium bowl, gently toss blueberries, raspberries, and blackberries with granulated sugar, cornstarch, lemon juice, and lemon zest if using. Let sit for 5 minutes to macerate and thicken.
  6. Spread the berry mixture evenly over the pressed base layer.
  7. Sprinkle the reserved crumble topping evenly over the berry layer without pressing down.
  8. Bake for 40-45 minutes or until the topping is golden brown and the berry filling is bubbling around the edges. Tent with foil if topping browns too fast.
  9. Cool completely on a wire rack for at least 2 hours before slicing to allow the filling to set.
  10. Slice into bars using a sharp knife, wiping the knife clean between cuts for neat edges.

Notes

Use cold butter for the crumble topping to achieve a crispy texture. Do not thaw frozen berries before mixing to prevent watery filling. Press the base firmly and let bars cool completely before slicing to avoid sogginess. Tent with foil if topping browns too quickly. Adding an extra tablespoon of cornstarch can help if berries are very juicy or frozen. Chilling bars for an hour before slicing improves clean cuts.

Nutrition

Keywords: berry crumble bars, oat streusel bars, triple berry dessert, crispy berry bars, homemade berry bars, easy berry dessert

Find it online: https://bitematrix.com/crispy-triple-berry-crumble-bars-recipe-easy-homemade-oat-streusel-bars/