Dessert

Blueberry Blondies Recipe

ByJeannette Jaeger January 17, 2026January 17, 2026

Introduction

These blueberry blondies are a delightful twist on the classic treat, combining the buttery sweetness of blondies with bursts of fresh blueberries. They bake up moist and tender, making them perfect for a snack or a simple dessert.

A stack of three square blueberry dessert bars sits on a white plate, each bar showing a golden yellow base with whole blueberries baked inside. The bars are topped with a thin drizzle of bright red sauce and a few scattered white chocolate chips. Nearby, more white chocolate chips and fresh blueberries are placed casually on the plate. In the background, a bowl filled with blueberries and a bowl with white chocolate chips rest on white marbled surface, along with a small white cup filled with red sauce. A soft gray cloth is draped behind the bowls. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

Nonstick cooking spray, for greasing
1 cup all purpose flour (125 g)
½ teaspoon baking powder
¼ teaspoon salt
6 tablespoons unsalted butter, melted
1 cup brown sugar (220 g)
1 large egg
2 teaspoons vanilla extract
1 ½ cups fresh blueberries (150 g), divided

Instructions

Step 1: Preheat the oven to 350°F (180°C). Grease an 8-inch (20 cm) square baking dish with nonstick spray and line it with parchment paper, letting the parchment hang over two sides for easy removal.
Step 2: In a medium bowl, whisk together the flour, baking powder, and salt until combined.
Step 3: In a large bowl, whisk the melted butter and brown sugar until smooth. Add the egg and vanilla extract and whisk to combine thoroughly.
Step 4: Stir in the dry ingredients until just combined, then gently fold in 1 cup of the fresh blueberries.
Step 5: Pour the batter into the prepared pan and smooth the top with a spatula. Press the remaining ½ cup of blueberries evenly into the surface.
Step 6: Bake for 30 to 40 minutes, or until a toothpick inserted into the center comes out clean.
Step 7: Allow the blondies to cool for 15 to 20 minutes before lifting them out of the pan using the parchment paper. Slice into 9 pieces and enjoy.

Tips & Variations

For a burst of flavor, sprinkle a little lemon zest into the batter to complement the blueberries.
Use frozen blueberries if fresh aren’t available, but do not thaw them to prevent the batter from becoming too wet.
Swap half of the brown sugar for white sugar for a lighter sweetness and texture.

Storage

Store the blueberry blondies in an airtight container at room temperature for up to 3 days, or refrigerate for up to a week. To reheat, warm briefly in the microwave or enjoy at room temperature for the best texture.

How to Serve

Square blueberry blondies are spread out on a dark, black textured surface. Each blondie has a golden-brown top layer with slight cracks and visible blueberries embedded inside. Some squares are decorated with thin white icing lines drizzled diagonally across the top. The texture of the blondies looks soft and moist, with blueberries adding deep purple spots throughout. The image is taken from above, showing multiple pieces evenly spaced. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use frozen blueberries instead of fresh?

Yes, you can use frozen blueberries directly in the batter without thawing to avoid excess moisture. This helps maintain the right consistency and prevents sogginess.

How do I know when the blondies are done?

Insert a toothpick into the center of the blondies; if it comes out clean or with just a few moist crumbs, they are done. Baking time may vary slightly depending on your oven.