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Easy Blueberry Crumble Bars with Oats Perfect for Summer Baking

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These easy blueberry crumble bars combine a buttery oat crumble topping with a juicy blueberry filling, perfect for a quick and delicious summer dessert.

Ingredients

Scale
  • 1 1/2 cups (135g) rolled oats
  • 1 cup (125g) all-purpose flour
  • 2/3 cup (135g) packed brown sugar
  • 1/4 cup (50g) granulated sugar
  • 3/4 cup (170g) unsalted butter, cold and cubed
  • 3 cups (about 450g) fresh blueberries
  • Zest of one lemon
  • 2 tablespoons cornstarch
  • 1 teaspoon vanilla extract
  • 1/4 teaspoon salt

Instructions

  1. Preheat your oven to 350°F (175°C) and line a 9×9-inch pan with parchment paper, leaving some overhang for easy removal.
  2. In a large bowl, combine 1 cup (90g) rolled oats, 3/4 cup (95g) flour, 1/3 cup (70g) brown sugar, and 1/8 teaspoon salt. Toss in the cold, cubed butter and use a pastry cutter or your fingers to work it into the flour and oats until the mixture looks like coarse crumbs with pea-sized bits (about 5 minutes).
  3. Press two-thirds of the crumble mixture into the bottom of the prepared pan. Bake this crust for 12 minutes until it’s just starting to turn golden around the edges.
  4. While the crust bakes, toss 3 cups (450g) fresh blueberries with 1/4 cup (50g) granulated sugar, 2 tablespoons cornstarch, lemon zest, 1 teaspoon vanilla extract, and a pinch of salt in a medium bowl.
  5. Remove the crust from the oven and carefully spread the blueberry filling evenly over it.
  6. Sprinkle the remaining crumble mixture on top of the berries without pressing down.
  7. Bake for 30-35 minutes, or until the topping is golden brown and the blueberry filling is bubbly around the edges.
  8. Cool completely in the pan on a wire rack for about 1 to 1.5 hours to allow the filling to set.
  9. Lift the bars out using the parchment overhang, slice into squares, and serve.

Notes

Keep butter cold for a flaky crumble topping. Let bars cool completely before slicing for clean cuts. Use fresh blueberries for best results; if using frozen, thaw and drain excess juice. You can prepare crumble ahead and refrigerate. Glass baking pans help monitor bubbling filling.

Nutrition

Keywords: blueberry bars, crumble bars, oat bars, summer dessert, easy baking, blueberry crumble, homemade dessert

Find it online: https://chloeplate.com/easy-blueberry-crumble-bars-with-oats-perfect-for-summer-baking/