Why You’ll Love This Recipe

White Chocolate Blueberry Crumble Bars are a delightful dessert that combines sweet, tart blueberries with creamy white chocolate and a buttery crumble topping. These bars are easy to make, perfect for sharing, and offer a balance of textures—soft, chewy, and crunchy—all in one bite. They’re great for picnics, potlucks, or simply as a sweet treat to enjoy with a cup of tea or coffee.

ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

For the crust and crumble topping:
all-purpose flour
old-fashioned rolled oats
granulated sugar
brown sugar
salt
unsalted butter (cold, cubed)
baking powder
vanilla extract

For the blueberry filling:
fresh blueberries (or frozen, thawed)
granulated sugar
lemon juice
cornstarch (or arrowroot powder)

For the white chocolate layer:
white chocolate chips or chopped white chocolate
heavy cream

directions

For the crust and crumble topping:

Preheat the oven to 350°F (175°C) and line a 9×9-inch baking pan with parchment paper.

In a large bowl, combine flour, oats, granulated sugar, brown sugar, salt, and baking powder.

Cut in the cold cubed butter using a pastry cutter or your fingers until the mixture resembles coarse crumbs.

Reserve 1 cup of this mixture for the crumble topping and press the rest evenly into the bottom of the prepared baking pan to form the crust.

Bake for 10-12 minutes until the crust is lightly golden. Set aside to cool slightly.

For the blueberry filling:

In a saucepan, combine blueberries, granulated sugar, lemon juice, and cornstarch. Cook over medium heat, stirring frequently until the mixture thickens and starts to bubble (about 5-7 minutes).

Remove from heat and let cool for a few minutes before spreading over the partially baked crust.

For the white chocolate layer:

In a small saucepan, heat heavy cream over low heat until it just begins to simmer. Remove from heat and add white chocolate chips. Stir until the chocolate is melted and smooth.

Pour the melted white chocolate over the blueberry filling, spreading evenly.

Sprinkle the reserved crumble topping over the white chocolate layer.

Return the pan to the oven and bake for another 25-30 minutes, or until the top is golden and the filling is bubbling.

Let the bars cool completely in the pan before slicing into squares.

Servings and timing

This recipe makes about 12-16 bars.
Preparation time: 15 minutes
Baking time: 40-45 minutes
Cooling time: 1 hour
Total time: 2 hours

Variations

Add chopped nuts, such as almonds or walnuts, to the crumble topping for added crunch.
Use dark chocolate chips or milk chocolate for a different flavor contrast.
Add a bit of cinnamon to the crumble topping for extra warmth.
Swap blueberries for raspberries, blackberries, or strawberries, depending on your preference.
Top with a drizzle of white chocolate or a dusting of powdered sugar after baking.

storage/reheating

Store bars in an airtight container at room temperature for up to 3 days or refrigerate for up to a week.
Reheat in the microwave for a few seconds to soften slightly before serving.
These bars can be frozen for up to 2 months—just be sure to wrap them well in plastic wrap and foil.

FAQs

Can I use frozen blueberries?

Yes, just make sure to thaw and drain them to avoid excess moisture.

Can I make these gluten-free?

Yes, use a gluten-free flour blend and certified gluten-free oats.

Can I make the crumble topping ahead?

Yes, you can prepare the crumble topping in advance and store it in the fridge until ready to use.

Why are my bars falling apart?

Ensure the filling has cooled slightly before adding the white chocolate layer and crumble topping, and allow the bars to cool completely before slicing.

Can I use a different type of chocolate?

You can substitute white chocolate with dark or milk chocolate, though the flavor and texture will be different.

What if I don’t have parchment paper?

You can grease and flour the pan instead, but parchment paper helps with easy removal.

Conclusion

White Chocolate Blueberry Crumble Bars are a perfect combination of rich, creamy white chocolate, sweet blueberries, and a buttery, crunchy crumble topping. They’re versatile, easy to make, and always a hit at gatherings or as a homemade treat. Give them a try, and they’re sure to become a favorite!