Description
These White Chocolate Blueberry Crumble Bars are soft, sweet, and packed with juicy blueberries and creamy white chocolate. A buttery oat crumble doubles as the base and topping, making them simple to prepare with just one dough. Perfect for summer gatherings, bake sales, or a cozy treat with coffee!
Ingredients
For the Crust & Crumble:
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1 cup unsalted butter, melted
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1 cup light brown sugar, packed
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1 1/2 cups all-purpose flour
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1 1/2 cups old-fashioned rolled oats
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1/2 tsp baking soda
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1/2 tsp salt
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1 tsp vanilla extract
For the Blueberry Filling:
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2 cups fresh or frozen blueberries (if frozen, don’t thaw)
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1/4 cup granulated sugar
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2 tsp cornstarch
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1 tbsp lemon juice
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1/2 tsp lemon zest (optional)
Add-ins:
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1/2 cup white chocolate chips (plus extra for topping)
Instructions
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Preheat Oven:
Preheat your oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper or lightly grease it. -
Make Crust & Crumble:
In a large bowl, combine melted butter, brown sugar, flour, oats, baking soda, salt, and vanilla. Stir until the mixture is crumbly and evenly moistened. -
Assemble the Layers:
Press about 2/3 of the mixture firmly into the bottom of the pan to form the crust. -
Prepare the Blueberry Filling:
In a separate bowl, mix blueberries with sugar, cornstarch, lemon juice, and zest. Spread the blueberry mixture evenly over the crust. -
Add White Chocolate:
Sprinkle white chocolate chips evenly over the blueberries. -
Top with Crumble:
Crumble the remaining oat mixture on top of the blueberries and chocolate. Gently press down. -
Bake:
Bake for 35–40 minutes, or until the top is golden brown and the blueberry filling is bubbling.
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Cool & Slice:
Let bars cool completely before slicing for cleaner cuts (you can refrigerate them to speed up cooling).
Notes
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For extra flavor, mix chopped nuts (like almonds or pecans) into the crumble topping.
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These bars store well in the fridge for up to 5 days and freeze beautifully.
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You can swap blueberries for other berries or use a berry mix.