Blueberry Streusel Bars

If you’re craving a sweet treat that’s both comforting and bursting with fresh flavor, these Blueberry Streusel Bars are exactly what you need. Imagine tender, buttery crust layered with juicy blueberries, all topped with a crumbly streusel that adds just the right amount of crunch and sweetness. This recipe combines simplicity with impressive taste, making it a perfect addition to your baking repertoire. Whether you’re serving them for breakfast, an afternoon snack, or a casual dessert, Blueberry Streusel Bars never fail to delight.

Why This Recipe Belongs in Your Rotation

Blueberry Streusel Bars are a versatile crowd-pleaser. They’re quick to prepare, don’t demand any complicated techniques, and use pantry staples with a fresh blueberry twist. The balance between the soft fruit filling and the crisp, buttery streusel topping creates a textural harmony that keeps everyone reaching for seconds. Plus, these bars hold up well for several days, making them ideal for meal prep or sharing with friends and family. If you love easy-to-make, flavorful baked goods, this recipe will quickly become a go-to.

What You’ll Gather

• _ cup flour – the base of the crust and streusel
• _ cup powdered sugar – adds sweetness and tenderness
• Dash of salt – enhances flavor and balances sweetness
• 6 tablespoons butter, cold and cut into pieces – crucial for that flaky, crumbly texture
• Fresh or frozen blueberries – the star of the filling
• Sugar – to sweeten the blueberry layer
• Lemon juice or zest – optional, brightens the blueberry flavor
• Cornstarch – helps thicken the blueberry filling
• Vanilla extract – adds depth and warmth

Toolbox for This Recipe

• Mixing bowls – for combining dry and wet ingredients separately
• 9×9-inch baking pan – perfect size for these bars
• Pastry cutter or fork – to cut cold butter into the flour mixture
• Measuring cups and spoons – for accurate ingredient amounts
• Spatula – to spread the blueberry filling evenly
• Cooling rack – lets bars cool properly without becoming soggy

Blueberry Streusel Bars in Steps

Step 1: Prepare the Crust and Streusel Base

Start by preheating your oven to 350°F (175°C). In a large mixing bowl, combine the _ cup flour, _ cup powdered sugar, and a dash of salt. Using a pastry cutter or fork, cut in the cold, cubed butter until the mixture resembles coarse crumbs. This step is key to achieving that perfect crumbly texture that defines great streusel. Press about two-thirds of this mixture firmly into the bottom of your greased 9×9-inch pan to form the crust.

Step 2: Make the Blueberry Filling

In another bowl, toss your blueberries with sugar, a splash of lemon juice or zest (if using), vanilla extract, and cornstarch. The cornstarch acts as a thickener, so your filling won’t become runny as it bakes. Once combined, pour the blueberry mixture evenly over the pressed crust.

Step 3: Add the Streusel Topping

Sprinkle the remaining crumb mixture over the blueberry layer. Don’t worry if it’s not perfectly even—those little gaps add to the rustic charm. The streusel will bake into a golden, crunchy topping that perfectly contrasts the juicy filling beneath.

Step 4: Bake and Cool

Place the pan in the oven and bake for about 40-45 minutes, or until the topping is golden brown and the blueberry filling is bubbling at the edges. Once baked, remove the pan and allow the bars to cool completely on a wire rack. This cooling step helps the filling set, making the bars easier to cut and serve.

Step 5: Slice and Serve

Once cooled, cut the bars into squares or rectangles. These bars shine on their own, but feel free to dust them with additional powdered sugar or serve alongside a dollop of whipped cream or a scoop of vanilla ice cream for an extra indulgence.

Allergy-Friendly Swaps

• Butter: Substitute with coconut oil or a plant-based margarine for a dairy-free alternative.
• Flour: Use a gluten-free flour blend to accommodate gluten sensitivities.
• Powdered sugar: Swap with coconut sugar or a natural sweetener, though this may affect texture slightly.
• Blueberries: Use other berries like raspberries, blackberries, or even chopped strawberries for variety.

What Not to Do

• Don’t skip chilling the butter: Cold butter is essential for that crumbly, tender streusel texture. Softened butter will make your topping dense and greasy.
• Don’t overload the filling: Use the right amount of blueberries to prevent soggy bars. Too much juice can make the crust soggy.
• Avoid underbaking: The bars need enough time in the oven to set properly—check that the edges are bubbling and topping is golden.
• Don’t cut bars while warm: Cutting too soon can cause the filling to spill out and make a mess. Patience pays off!

Prep Ahead & Store

You can prepare the crust and streusel topping in advance and keep them refrigerated separately for up to 2 days before assembling the bars. Once baked, store Blueberry Streusel Bars in an airtight container at room temperature for up to 3 days or refrigerate for up to a week. To keep them fresh longer, freeze the baked bars wrapped tightly in plastic wrap and aluminum foil for up to 3 months. Thaw overnight in the fridge before serving.

FAQ

Can I use frozen blueberries for these bars?

Absolutely! Frozen blueberries work just as well as fresh ones. Just make sure to thaw and drain any excess liquid to avoid soggy bars.

How do I make the streusel topping more crunchy?

Use cold butter and handle the mixture minimally when cutting in the butter. Baking until golden brown also enhances the crunch. You can add a sprinkle of chopped nuts for extra texture if you like.

What’s the best way to store leftover bars?

Keep them in an airtight container at room temperature for a few days or refrigerate for up to a week. They also freeze well—just thaw before enjoying.

Can I substitute the butter with oil?

Butter is preferred for the rich, flaky texture, but you can substitute with solid coconut oil for a dairy-free option. Avoid liquid oils, as they won’t create the same crumbly texture.

Keep Cooking

• For more berry-filled breakfast ideas, try the delicious Berry Baked Oatmeal.
• If you love a good breakfast bar, the Apple Cinnamon Oat Breakfast Bars are a fantastic choice.
• Looking for a rustic fruit dessert? The Strawberry Galette is a delightful treat with a flaky crust and fresh strawberries.

Bring It to the Table

Blueberry Streusel Bars are a welcome addition to any occasion. Pack them for picnics, slice and serve at a brunch buffet, or simply enjoy with a cup of coffee or tea on a lazy afternoon. Their vibrant blueberry flavor and crumbly topping make them a standout treat that both kids and adults will love. Whip up a batch, share with loved ones, and watch how quickly these bars disappear!

Enjoy baking and savor every bite of these irresistible Blueberry Streusel Bars!

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