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Crispy Lemon Blueberry Crumble Bars

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These crispy lemon blueberry crumble bars feature a buttery oat streusel topping with a tangy blueberry filling, perfect for a quick and easy dessert that balances sweet and tart flavors.

Ingredients

Scale
  • 1 ¾ cups (220g) all-purpose flour
  • 1 cup (90g) old-fashioned rolled oats
  • ⅔ cup (135g) granulated sugar
  • ⅓ cup (70g) packed brown sugar
  • ¾ cup (170g) unsalted butter, softened
  • 1 tsp baking powder
  • ½ tsp salt
  • 3 cups (450g) fresh or frozen blueberries
  • ⅓ cup (80ml) freshly squeezed lemon juice
  • Zest of 1 large lemon
  • ⅓ cup (65g) granulated sugar
  • 2 tbsp cornstarch
  • 1 tsp vanilla extract

Instructions

  1. Preheat your oven to 350°F (175°C) and grease a 9×13-inch pan or line it with parchment paper, leaving overhang for easy removal.
  2. In a large bowl, combine 1 ¾ cups all-purpose flour, 1 cup rolled oats, ⅔ cup granulated sugar, ⅓ cup brown sugar, 1 tsp baking powder, and ½ tsp salt.
  3. Cut in the softened butter (¾ cup) using a pastry cutter or fork until the mixture looks crumbly but holds together when squeezed, about 3-5 minutes.
  4. Press about two-thirds of this mixture evenly into the bottom of the prepared pan to form a compact crust. Set the remaining streusel aside.
  5. In a separate bowl, whisk together 3 cups blueberries, ⅓ cup lemon juice, lemon zest, ⅓ cup granulated sugar, 2 tbsp cornstarch, and 1 tsp vanilla extract until evenly combined.
  6. Pour the filling evenly over the crust in the pan and spread gently with a spatula if needed.
  7. Sprinkle the reserved streusel mixture evenly over the blueberry filling without pressing down.
  8. Bake for 40-45 minutes or until the topping is golden brown and the filling is bubbling around the edges.
  9. Cool completely on a wire rack for at least 1 hour to let the filling set and bars firm up.
  10. Slice into bars using a sharp knife, wiping it clean between cuts to keep edges neat, and enjoy.

Notes

Use softened but not melted butter for the streusel to achieve a crumbly texture. Cool bars completely before slicing to prevent a juicy mess. If streusel browns too quickly, tent with foil halfway through baking. For a thicker filling, add up to 1 tbsp extra cornstarch if needed.

Nutrition

Keywords: lemon blueberry crumble bars, oat streusel bars, lemon blueberry dessert, crumble bars recipe, easy dessert bars, homemade oat streusel

Find it online: https://norasfoods.com/crispy-lemon-blueberry-crumble-bars-easy-homemade-oat-streusel-recipe/