These Blueberry Blondies are thick, chewy, and bursting with juicy blueberry flavor. Made with a rich brown sugar blondie base, they’re studded with fresh blueberries and swirled with blueberry jam for an extra fruity punch. Finished with a creamy white chocolate drizzle, these easy bars come together in under 30 minutes—no mixer needed!
Welcome to your new favorite dessert! These Blueberry Blondies combine the best of both worlds: the rich, buttery flavor of classic blondies and the bright, juicy burst of fresh blueberries.
These bars are perfectly chewy, delightfully moist, and incredibly versatile—ideal for a family gathering, a potluck, or even a solo treat with your favorite cup of coffee. This quick and easy recipe comes together in no time and bonus, no mixer needed!
For more blueberry recipes try my lemon blueberry poppy seed cake or white chocolate blueberry cookies or lemon blueberry cookies.
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Why You’ll Love This Recipe
- Bursting with Flavor: Each bite is a delightful mix of buttery blondie goodness and naturally sweet, tangy juicy blueberries.
- Easy to Make: These blondie bars are made with simple pantry ingredients and and come together in no time without the need of a mixer!
- Perfect Texture: Enjoy a perfect balance of chewy and fudgy, ensuring every bite is consistently delightful.
- Versatile Treat: Great as a dessert, snack, or even an impressive addition to your brunch spread.
- Customizable: Add a crumb topping or sprinkle of coarse sugar on top for extra crunch, or mix in some white chocolate chips for a twist!
Ingredient Notes
- Butter: Use high-quality unsalted butter for the best flavor and texture.
- Blueberries: Fresh blueberries are preferred for their vibrant flavor and texture. If using frozen berries, do not thaw to avoid excess moisture.
- Blueberry Jam: Optional here but it helps to add more concentrated blueberry flavor in this recipe. You can use store bought or homemade blueberry jam.
- Vanilla Extract: Pure vanilla extract enhances the rich, buttery base.
- Eggs: This recipe uses a whole egg and an egg yolk.
- Light Brown sugar: Adds chewiness to the blondies. You can use dark brown sugar as well.
- All purpose Flour : Provides just enough structure to create a soft, chewy blondie.
- White Chocolate:Use high-quality white chocolate chips or chopped white chocolate bar for a creamy, sweet contrast to the blueberries.
Step-by-Step Instructions
Here is how make and bake these easy blueberry blondies. You can use a stand mixer fitted with a paddle attachment or a large mixing bowl with a hand mixer.
Step 1. Preheat & Prepare: Preheat your oven to 350°F (175°C).Grease and line an 8 inch square baking pan with parchment paper, leaving an overhang for easy removal.
Step 2. Mix Wet Ingredients: In a large bowl, whisk together the melted butter, brown sugar, and granulated sugar until smooth.Beat in the egg, egg yolk and vanilla extract until well combined.
Step 3. Combine Dry Ingredients: In a separate bowl, whisk together the flour, baking powder, and salt.Gradually add the dry ingredients to the wet mixture, stirring until just combined.
Step 4. Fold in Blueberries: Gently fold in the blueberries, being careful not to overmix to avoid breaking them apart.
Step 5. Swirl blueberry jam: Pour the blondie batter into the prepared pan and spread evenly.Spread a few extra blueberries on top of the batter. dollop a few spoonfuls of the blueberry jam if using and swirl using a knife or skewer.
Step 6. Bake: Bake in the preheated oven for 25–30 minutes, or until a toothpick inserted in the center of the blondies comes out with a few moist crumbs. Avoid overbaking to maintain a chewy texture.
Step 7. Cool & Slice: Allow the blondies to cool completely in the pan on a wire rack.
While the blondies are cooling melt the white chocolate in microwave in 30 second intervals.Drizzle the melted white chocolate over the blondies using a piping bag or spoon.
Once the chocolate drizzle has set use the parchment paper overhang to lift the blondies from the pan, then cut into squares.
Tips & Tricks
- Even Distribution: Gently fold the blueberries into the batter to avoid breaking them up too much.
- Kitchen Scale: For best results I recommend using a kitchen scale to measure all your ingredients.
- Room Temperature Ingredients: Ensure eggs and butter are at room temperature to help the batter mix more evenly.
- Swirl the jam carefully: Do not over-mix the blueberry jam. All you need to do is gently swirl it into the batter using a butter knife or skewer.
- Optional Crunch: For an extra textural element, sprinkle a bit of coarse sugar or streusel on top of the blondie batter before baking.
- Pan Preparation: Line your baking pan with parchment paper to ensure easy removal and clean-up.
FAQ’s
Yes, you can! Just make sure not to thaw them before adding to the batter. If they thaw, then they will release juices which will cause the batter to turn blueish.I like to use frozen wild blueberries.
Avoid overbaking and overmixing the batter. Baking until just set will keep them moist and chewy.
Absolutely! Use a 9*13 baking and adjust the baking time as needed.
Store them in an airtight container at room temperature for 3-4 days, or in the refrigerator for up to 1 week.
Yes you can substitute raspberries and turn these into my white chocolate raspberry blondies.You can also use chopped strawberries and turn these into strawberry blondies
Storage & Freezing
- Room Temperature: Store the Blueberry Blondies in an airtight container at room temperature for up to 3 days.
- Refrigeration: For extended freshness, place them in an airtight container in the refrigerator for up to 1 week.
- Freezing: Wrap individual squares in plastic wrap and then place in a freezer-safe container or bag. Freeze for up to 2 months. Thaw overnight in the refrigerator before serving.
More Bar Desserts You Will Love
Recipe
Blueberry Blondies with White Chocolate
Equipment
- 8 inch square pan
Ingredients
- ½ cup unsalted butter
- ¾ cup packed light brown sugar
- 1 large egg plus 1 egg yolk
- 1 teaspoon pure vanilla extract
- 1 cups all-purpose flour
- ½ teaspoon baking soda
- ¼ teaspoon salt
- 1 cup fresh blueberries
- ⅓ cup blueberry jam Optional
- ¼ cup white chocolate chips
Instructions
- Preheat oven to 350 F/180C and butter and line with parchment an 8 inch square baking pan.
- In a small saucepan, melt the butter. Remove from heat and let cool to room temperature.
- In a bowl, whisk together the flour, salt and baking soda.
- In a large bowl, whisk together the brown sugar and warm melted butter until it cools and comes together well (2-3 minutes). Mix in the egg, egg yolk and vanilla extract
- Gently fold in the blueberries into the blondie batter making sure not to overmix.
- Pour the batter into the prepared pan, smooth the top.Spoon a few dollops of the blueberry jam and swirl carefully using a knife or skewer.
- Bake for about 25-30 mins, or until the top of the bars are dry, golden brown, and a toothpick inserted in the center comes out with a few moist crumbs.
- Remove from oven and place on a wire rack.
- While the blondies are cooling melt the white chocolate in microwave in 30 second intervals.Drizzle the melted white chocolate over the blondies.
- Once the white chocolate drizzle has set cut the blondies into pieces.
Notes
- Don’t Overmix the blueberries: Overmixing can lead to blueberries bleeding into the batter and turning it blue.
- Add white chocolate: If you love white chocolate you can ½ cup of white chocolate chips or chunks into the batter along with the blueberries.
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