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Strawberry Crumble Bars

Strawberry crumble bars with a glossy filling and crispy oat topping.

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These Strawberry Crumble Bars are a nostalgic and comforting dessert featuring a jammy strawberry filling between a buttery oat crust and crumble topping. They are simple to make with pantry staples and fresh fruit, perfect for summer gatherings or a sweet treat. This easy recipe yields handheld bars that are both delicious and versatile.

Ingredients

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  • 2 cups all-purpose flour
  • 1 cup old-fashioned rolled oats
  • 1 cup packed light brown sugar
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup (2 sticks) cold unsalted butter, cubed
  • 3 cups fresh strawberries, hulled and diced
  • 1/3 cup granulated sugar
  • 2 tablespoons cornstarch
  • 1 tablespoon fresh lemon juice
  • 1 teaspoon vanilla extract

Instructions

  1. Preheat oven to 350°F (175°C). Line an 8×8 or 9×9 inch baking pan with parchment paper, leaving an overhang on two sides.
  2. In a large bowl, whisk together flour, oats, brown sugar, baking soda, and salt. Add cold, cubed butter. Use a pastry cutter, fork, or fingers to work butter into dry ingredients until mixture resembles coarse, pebbly sand with some clumps.
  3. Reserve about 1 1/2 cups of the crumble mixture for the topping. Press remaining mixture firmly and evenly into the bottom of the prepared pan. Bake for 15 minutes.
  4. While crust bakes, prepare filling. In a medium bowl, gently toss diced strawberries with granulated sugar, cornstarch, lemon juice, and vanilla extract.
  5. Spread strawberry filling evenly over the hot, par-baked crust. Sprinkle reserved crumble topping evenly over strawberries, covering completely. Do not press down.
  6. Bake for 35-40 minutes, until topping is golden brown and strawberry filling is bubbling around the edges.
  7. Let pan cool completely on a wire rack for at least 2 hours before slicing into bars.

Notes

For clean slices, allow bars to cool completely. Use cold butter for a crumbly texture. Frozen strawberries can be used; add an extra tablespoon of cornstarch. Bars can be stored at room temperature for 2 days, refrigerated for 5 days, or frozen for up to 3 months.

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