There’s something truly special about Best Blueberry Crumb Bars—they’re buttery, sweet, and packed with juicy blueberries in every bite. Whether you’re craving a simple dessert, a snack with your morning coffee, or an easy treat to share, these bars are just what you need.
Not only are they easy to make, but they also come together quickly with just a few ingredients. First, the golden, buttery crumb crust creates the perfect base. Then, the fresh blueberry filling adds a sweet-tart flavor that pairs beautifully with the light hint of lemon. Finally, the crisp crumb topping brings everything together for an irresistible bite.
Even better, these bars are perfect for any occasion. You can serve them warm with a scoop of vanilla ice cream, or, if you prefer, enjoy them chilled straight from the fridge. Plus, they store beautifully, so they make a great make-ahead treat.
So, if you’re looking for a no-fuss, crowd-pleasing dessert, these bars are it. Let’s get baking!
Recipe Yield: 9-12 bars
INGREDIENTS
FOR THE CRUST & CRUMB TOPPING:
2 ½ cups all-purpose flour
1 cup (2 sticks) unsalted butter, melted
¾ cup granulated sugar
¼ cup light brown sugar, packed
1 tsp baking powder
½ tsp salt
1 tsp vanilla extract
½ tsp ground cinnamon (optional but recommended for warmth & depth)
FOR THE BLUEBERRY FILLING:
3 cups fresh blueberries (or frozen, thawed and drained)
½ cup granulated sugar
1 tbsp cornstarch
One tbsp lemon juice
1 tsp lemon zest
INSTRUCTIONS
1. Preheat & Prep: Preheat your oven to 375°F (190°C). Line a 9×9-inch baking pan with parchment paper, leaving an overhang for easy removal.
2. Make the Crumb Base: In a large bowl, mix melted butter, flour, granulated sugar, brown sugar, baking powder, salt, cinnamon, and vanilla. Stir until the mixture forms coarse crumbs. Press half of the mixture evenly into the bottom of the prepared pan.
3. Prepare the Blueberry Filling: In another bowl, toss blueberries, sugar, cornstarch, lemon juice, and zest until evenly coated. Spread this mixture over the crust.
4. Add the Crumb Topping: Sprinkle the remaining crumb mixture over the blueberry filling, gently pressing it down.
5. Bake to Perfection: Bake for 45–50 minutes, or until the top is golden brown and the blueberry filling is bubbly. Let it cool completely before cutting into bars.
6. Slice & Serve: Once cooled, lift the bars from the pan using the parchment overhang. Slice into squares and enjoy!
HELPFUL TIPS TO PERFECT THIS RECIPE
- Cinnamon Adds Warmth: A little cinnamon in the crumb topping brings out the blueberry flavor beautifully!
- Fresh or Frozen Blueberries Work: If using frozen blueberries, thaw and drain well to prevent excess moisture.
- Cool Completely Before Slicing: The bars set as they cool, making them easier to cut cleanly.
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