Blueberry Crumble Bars

These Blueberry Crumble Bars are buttery, fruity, and packed with sweet blueberry filling layered between soft crumbly crust and golden crumble topping. Every bite is bursting with juicy blueberries and rich buttery flavor, making these bars perfect for breakfast treats, brunches, summer desserts, snack trays, or afternoon coffee breaks. The soft base and crisp crumble topping create the perfect texture combination while the blueberry filling adds a sweet and slightly tart flavor everyone loves.

Blueberry Crumble Bars

These Blueberry Crumble Bars are buttery, fruity, and layered with juicy blueberry filling and golden crumble topping.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr 5 minutes mins

Servings: 12 bars

Calories: 320

Ingredients Method Notes

Ingredients

  

• For the Crust and Crumble
• 2 cups all-purpose flour
• 1 cup granulated sugar
• 1 teaspoon baking powder
• 1/4 teaspoon salt
• 1 cup unsalted butter melted
• 1 large egg
• 1 teaspoon vanilla extract
• For the Blueberry Filling
• 3 cups fresh or frozen blueberries
• 1/2 cup granulated sugar
• 2 tablespoons cornstarch
• 1 tablespoon lemon juice
• 1 teaspoon lemon zest

Method

 

1. Preheat the oven to 350°F (175°C) and line a 9×9-inch baking pan with parchment paper for easier removal and cleanup.
2. In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt until evenly combined.
3. Add the melted butter, egg, and vanilla extract to the dry ingredients. Stir everything together until crumbly dough forms with small buttery crumbs throughout the mixture.
4. Reserve about 1 cup of the crumble mixture for the topping and press the remaining dough evenly into the bottom of the prepared baking pan to create the crust layer.
5. In another bowl, combine the blueberries, sugar, cornstarch, lemon juice, and lemon zest. Toss gently until the blueberries are fully coated and the cornstarch is evenly distributed.
6. Spread the blueberry mixture evenly over the prepared crust layer, making sure the berries are spread all the way to the edges for even flavor in every bite.
7. Sprinkle the reserved crumble mixture evenly over the blueberry layer, covering most of the fruit while still allowing some blueberry filling to show through.
8. Bake for 40–45 minutes or until the crumble topping becomes lightly golden brown and the blueberry filling is bubbling around the edges.
9. Remove the pan from the oven and allow the bars to cool completely before slicing. This helps the filling set properly and creates cleaner bars.
10. Slice into squares and serve as is or dust lightly with powdered sugar before serving if desired.

Notes

• Fresh or frozen blueberries both work well in this recipe.
• If using frozen blueberries, do not thaw them first.
• Let the bars cool completely before slicing for cleaner layers.
• Lemon zest adds extra brightness to the blueberry flavor.
• Parchment paper helps lift the bars easily from the pan.
• The crumble topping should stay slightly chunky for the best texture.
• Store leftovers in the refrigerator for freshness.

Variations

• Add raspberries or blackberries with the blueberries.
• Mix chopped pecans or walnuts into the crumble topping.
• Add cinnamon to the crumble mixture for warmth.
• Use strawberry filling instead of blueberry.
• Drizzle vanilla glaze over the cooled bars.
• Add oats to the crumble topping for extra texture.
• Use brown sugar for a deeper caramel flavor.

Serving Suggestions

• Serve slightly chilled or at room temperature.
• Pair with hot coffee or tea.
• Serve with vanilla ice cream for dessert.
• Add whipped cream on top before serving.
• Enjoy as a brunch or breakfast pastry.
• Pack into dessert trays for parties or picnics.
• Serve warm with extra fresh blueberries.

Tips

• Use room temperature egg for easier mixing.
• Avoid overmixing the crumble dough to keep it tender.
• Chill the bars slightly before slicing for neat squares.
• A serrated knife helps cut clean bars.
• Store in an airtight container for up to 5 days.
• Taste the blueberries first and adjust sugar if needed.
• Bake until the blueberry filling bubbles for the best texture.

Prep Time / Baking Time / Total Time

Prep Time: 20 minutes
Baking Time: 45 minutes
Total Time: 1 hour 5 minutes

Servings

Serves: 12 bars

Nutritional Info (Approx.)

Calories: 320 per serving
Protein: 3g
Fat: 15g
Carbohydrates: 44g
Fiber: 2g
Sugar: 24g
Sodium: 120mg

FAQs

Can I use frozen blueberries for Blueberry Crumble Bars?
Yes, frozen blueberries work perfectly in this recipe and are very convenient year-round. You should add them directly from the freezer without thawing because thawed berries release extra liquid that can make the filling too soft during baking.

How do I keep the crumble topping crispy?
The crumble topping stays crisp when baked until golden brown and fully cooled before storing. If the bars are covered while still warm, steam can soften the topping, so always let them cool completely first.

Can I make Blueberry Crumble Bars ahead of time?
Absolutely. These bars are great for making ahead because the flavors become even better after resting for a few hours. They can be stored in the refrigerator for several days, making them perfect for parties, meal prep, or holiday dessert trays.

How should I store leftover crumble bars?
Store leftover bars in an airtight container in the refrigerator for up to 5 days. You can enjoy them cold straight from the fridge or let them sit at room temperature for a softer texture before serving.

Can I freeze Blueberry Crumble Bars?
Yes, these bars freeze very well. Wrap individual bars tightly in plastic wrap and place them in a freezer-safe container. Thaw overnight in the refrigerator before serving for the best texture and flavor.

Conclusion

Blueberry Crumble Bars are buttery, fruity, soft, and topped with irresistible golden crumble in every bite. With juicy blueberry filling and rich crumbly layers, these easy dessert bars are perfect for summer gatherings, brunches, snack trays, or everyday sweet cravings. They’re simple to make, full of fresh berry flavor, and guaranteed to become a family favorite.