Rainbow-studded blondies with soda streusel—chewy, buttery, and fun. Great for parties and cheerful treats.
# Ingredient List:
→ Blondie Batter
01 - 1/2 cup unsalted butter, melted and slightly cooled
02 - 1 cup light brown sugar, packed
03 - 1 large egg
04 - 1 teaspoon vanilla extract
05 - 1/4 cup lemon-lime soda (such as Sprite or 7UP)
06 - 1 1/4 cups all-purpose flour
07 - 1/2 teaspoon baking powder
08 - 1/4 teaspoon salt
09 - 1/2 cup rainbow sprinkles
→ Soda Streusel
10 - 1/3 cup granulated sugar
11 - 1/4 cup all-purpose flour
12 - 2 tablespoons unsalted butter, melted
13 - 1 tablespoon lemon-lime soda
14 - Pinch of salt
15 - 2 tablespoons rainbow sprinkles
# Directions:
01 - Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, leaving an overhang for easy removal.
02 - In a medium bowl, whisk together melted butter and brown sugar until smooth. Add egg and vanilla extract and whisk until fully incorporated.
03 - Stir lemon-lime soda into the wet mixture until evenly combined.
04 - In a separate bowl, whisk flour, baking powder, and salt together. Gradually fold dry ingredients into wet mixture until just combined. Avoid overmixing.
05 - Gently fold rainbow sprinkles into the batter.
06 - Transfer batter into prepared pan, smoothing surface evenly.
07 - Combine granulated sugar, flour, melted butter, lemon-lime soda, and a pinch of salt in a small bowl. Mix with a fork until crumbly, then stir in sprinkles.
08 - Scatter streusel evenly over batter. Bake for 26–28 minutes, or until edges are set and a toothpick inserted in the center comes out with a few moist crumbs.
09 - Cool completely in the pan on a wire rack. Lift out using parchment paper and cut into 16 bars.
