Blueberry Crumble Bars Recipe

Discover the best Blueberry Crumble Bars Recipe with a buttery crust, juicy blueberries, and a crumble topping. They’re so easy to make.

These Blueberry Crumble Bars are a must-try for anyone who loves simple, homemade desserts with big flavor. Made with fresh or frozen blueberries, these bars are layered with a buttery shortbread crust and topped with a golden, crumbly streusel.

What makes this Blueberry Crumble Bars recipe stand out is its combination of wholesome, pantry-friendly ingredients. You’ll need fresh blueberries, sugar, lemon zest, flour, butter, and oats to create the perfect balance of tart, sweet, and buttery goodness.

To get the best results from these Blueberry Crumble Bars Recipe, make sure to press the crust firmly into the pan before adding the filling and topping. Bake until the crumble is golden brown and the blueberry filling is bubbling slightly. Once cooled, the bars slice beautifully and can be stored in an airtight container for up to 4 days—or frozen for longer shelf life.

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Ingredients

Crust and Topping

1 cup all-purpose flour

3/4 cup rolled oats

1/2 cup light brown sugar

1/2 teaspoon ground cinnamon

1/4 teaspoon salt

8 tablespoons cold butter, diced

Filling

3 cups fresh blueberries

1/4 cup granulated sugar

1 tablespoon cornstarch

1 teaspoon lemon zest

(Serves 8-12)

To Prepare:

1. Preheat oven to 350 degrees.  Butter 9 x 9 inch pan and line with parchment hanging over on opposite sides of pan.
2. In a sauce pan, add 2 cups blueberries, sugar, cornstarch and lemon zest.  Place pan over medium heat and cook for 8 minutes, stirring occasionally.
3. Turn off heat and add remaining cup of blueberries, stir. Set aside.
4. In a stand mixer or large bowl, combine flour, oats, brown sugar, cinnamon and salt.
5. Add cold diced butter and mix until coarse crumbs — do not over mix.
6. Add half of crumb mixture to pan and press into bottom firmly.  Bake for 10 minutes.
7. Add blueberry mixture over top of crust and sprinkle with remaining crumbs.  Bake for 30-35 minutes or until edges are lightly bubbling.
8. Cool to room temperature and slice.  Enjoy!

I like to serve these Blueberry Crumble Bars with a scoop of vanilla ice cream or an added delicious touch.