Blueberry Streusel Bars
Blueberry Streusel Bars are the perfect blend of sweet and tart, making them an irresistible treat for any occasion. Whether you’re hosting a brunch, packing a picnic, or simply indulging in a sweet snack at home, these bars are sure to delight your taste buds. With a buttery crumb crust, juicy blueberries, and a crunchy streusel topping, they are both simple to make and stunning to serve. Let’s dive into this delightful recipe that captures the essence of summer in every bite.
The Upside of Blueberry Streusel Bars

There’s something truly magical about biting into a blueberry streusel bar. The combination of flavors and textures is nothing short of heavenly. The buttery crust cradles sweet blueberries, which burst with flavor, while the crunchy streusel adds just the right amount of texture. Not only are they delicious, but they are also incredibly versatile. Serve them warm with a scoop of ice cream, or enjoy them chilled alongside a cup of tea. Plus, they’re easy to prepare and can be made ahead of time, making them a perfect choice for busy bakers.
Shopping List
- 1 cup flour
- 1 cup powdered sugar
- Dash of salt
- 6 tablespoons butter, cold and cut into pieces
- 2 cups fresh or frozen blueberries
- 1 tablespoon lemon juice
- 1/4 cup granulated sugar
- 1 teaspoon vanilla extract
- 1/2 teaspoon cinnamon
Gear Checklist
- Mixing bowls – You’ll need two: one for the crust and another for the filling.
- 9×9 inch baking pan – This is perfect for baking your bars.
- Whisk – To mix your dry ingredients and combine your wet ingredients.
- Rubber spatula – For folding in the blueberries gently.
- Measuring cups and spoons – Accurate measurements are key to great baking.
- Parchment paper – Optional, but it makes removing the bars from the pan much easier.
Method: Blueberry Streusel Bars

Step 1: Preheat Your Oven
Preheat your oven to 350°F (175°C). This ensures that your bars will bake evenly and achieve that perfect golden color.
Step 2: Prepare the Baking Pan
Grease your 9×9 inch baking pan with cooking spray or line it with parchment paper for easy removal later.
Step 3: Make the Crust
In a mixing bowl, combine 1 cup of flour, 1 cup of powdered sugar, and a dash of salt. Add the 6 tablespoons of cold butter, cut into pieces. Use a pastry cutter or your fingers to work the butter into the flour mixture until it resembles coarse crumbs. Press this mixture firmly into the bottom of the prepared baking pan to form an even layer.
Step 4: Prepare the Blueberry Filling
In another bowl, combine the 2 cups of blueberries, 1 tablespoon of lemon juice, 1/4 cup of granulated sugar, 1 teaspoon of vanilla extract, and 1/2 teaspoon of cinnamon. Gently toss the blueberries to coat them and avoid smashing them.
Step 5: Assemble the Bars
Evenly spread the blueberry mixture over the crust in the baking pan.
Step 6: Make the Streusel Topping
Using the same bowl you used for the crust, mix together any remaining flour and powdered sugar. Add a bit more butter if necessary, and mix until crumbly. Sprinkle this streusel topping over the blueberry layer.
Step 7: Bake
Bake in your preheated oven for 30-35 minutes, or until the top is lightly golden brown and the blueberries are bubbling.
Step 8: Cool and Serve
Once baked, remove the bars from the oven and let them cool in the pan for at least 15 minutes. Carefully lift them out using the parchment paper, if used, and allow to cool completely on a wire rack. Cut into squares and enjoy your delicious Blueberry Streusel Bars!
Swap Guide

- Flour: Whole wheat flour can be used for a healthier option, though it may change the texture slightly.
- Butter: Coconut oil or a vegan butter substitute can be used for a dairy-free version.
- Blueberries: If fresh blueberries aren’t available, frozen blueberries can be used; just don’t thaw them before mixing.
- Granulated sugar: Coconut sugar or a sugar substitute can work well for a lower glycemic option.
Watch Outs & How to Fix
- Overmixing the batter can lead to dense bars; mix just until combined.
- If the streusel topping is too dry, add a little more melted butter to help it clump together.
- Baking time may vary based on your oven; keep an eye on the bars towards the end of the baking time to prevent over-baking.
- If the blueberries burst too much, it’s okay! Just let them cool completely before slicing.
Make Ahead Like a Pro
Blueberry Streusel Bars can be made ahead of time and stored in an airtight container. They will stay fresh at room temperature for up to 3 days, or in the refrigerator for up to a week. For longer storage, freeze the bars in an airtight container for up to 3 months. Simply thaw at room temperature before serving.
Ask the Chef
Can I use other fruits in this recipe?
Absolutely! This recipe is versatile, and you can substitute blueberries with raspberries, strawberries, or even diced peaches for a delightful twist.
What should I do if my streusel topping isn’t crumbling?
If your streusel topping is too dry, try adding a little melted butter or using your fingers to break it up further and ensure it holds together better.
How do I know when the bars are done baking?
The bars are done when the top is lightly golden brown, and you can see the blueberries bubbling. A toothpick inserted into the center should come out clean or with a few moist crumbs.
Can I make these gluten-free?
Yes! Substitute the all-purpose flour with a gluten-free flour blend. Just make sure to check that your baking powder is also gluten-free.
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In Closing
Blueberry Streusel Bars are a delightful treat that can brighten up any day. With their buttery crust, juicy filling, and crunchy topping, they are the perfect way to showcase summer’s bounty. Whether you’re baking for a special occasion or just want a sweet snack, these bars are sure to impress. So gather your ingredients and get ready to create a delicious dessert that will have everyone coming back for seconds!

Blueberry Streusel Bars
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C).
- Grease your 9x9 inch baking pan with cooking spray or line it with parchment paper.
- In a mixing bowl, combine flour, powdered sugar, and salt. Add cold butter and work it into the mixture until it resembles coarse crumbs. Press into the prepared pan.
- In another bowl, combine blueberries, lemon juice, granulated sugar, vanilla extract, and cinnamon. Gently toss the blueberries.
- Spread the blueberry mixture over the crust in the baking pan.
- Mix remaining flour and powdered sugar, add butter if necessary, and sprinkle over the blueberry layer.
- Bake for 30-35 minutes until the top is golden brown and blueberries are bubbling.
- Let cool in the pan for at least 15 minutes, then transfer to a wire rack to cool completely before cutting.
Notes
- Store in an airtight container for up to 3 days at room temperature.
- For a healthier option, substitute whole wheat flour.
- Try using other fruits like raspberries or strawberries for variety.
