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Gooey Root Beer Float Brownies Recipe

4.6 from 126 reviews

These Gooey Root Beer Float Brownies combine rich chocolate with the nostalgic flavor of root beer for a uniquely indulgent dessert. Featuring a fudgy brownie base infused with root beer and topped with a smooth root beer glaze, this recipe offers a fun twist on a classic treat that’s perfect for any occasion.

Ingredients

Scale

Dry Ingredients

  • 1 1/3 cups all-purpose flour
  • 1 cup unsweetened cocoa powder
  • 1 tsp kosher salt

Chocolate and Butter

  • 12 oz semisweet chocolate chips
  • 6 oz white chocolate chips
  • 8 tbsp butter, cubed

Wet Ingredients

  • 6 eggs
  • 1 cup granulated sugar
  • 1 cup packed brown sugar
  • 4 tsp pure vanilla extract
  • 16 oz root beer

Frosting/Glaze

  • 1/4 cup butter, softened
  • 2 1/2 cups powdered sugar
  • 1/4 cup root beer
  • 1/2 tsp root beer extract

Instructions

  1. Prepare Baking Dish and Dry Ingredients: Preheat your oven to 375°F. Grease a 9×13 inch baking dish with baking spray to prevent sticking. In a medium-sized bowl, combine the all-purpose flour, unsweetened cocoa powder, and kosher salt. Whisk thoroughly to ensure everything is evenly distributed, then set aside.
  2. Melt Chocolates and Butter: In a microwave-safe bowl, combine the semisweet chocolate chips, white chocolate chips, and cubed butter. Microwave in 20-30 second increments, stirring between each, until just melted and smooth. Stir thoroughly and let cool slightly to avoid scrambling the eggs when added.
  3. Mix Wet Ingredients and Blend with Chocolate: In a large bowl, beat the eggs, granulated sugar, brown sugar, and vanilla extract together with an electric mixer or whisk until well combined and slightly lighter in color. Slowly pour in the cooled melted chocolate mixture, mixing continuously to form a smooth batter.
  4. Combine Dry Ingredients and Root Beer, Bake Brownies: Alternately add the dry flour mixture and root beer to the wet chocolate batter, mixing gently after each addition until just incorporated—do not overmix. Pour the batter into the prepared baking dish and bake for 35-40 minutes or until the center is just set. Allow brownies to cool completely in the pan.
  5. Frost and Finish the Brownies: Once cooled, prepare the frosting by combining softened butter, powdered sugar, root beer, and root beer extract until smooth (or use a simple glaze with butter and root beer if you prefer). Spread evenly over the brownies, then chill for 10 minutes to set the topping before slicing and serving.

Notes

  • Do not overmix the batter when combining dry ingredients and root beer to keep brownies tender and fudgy.
  • Allow brownies to cool completely before frosting to prevent melting or sliding.
  • Chilling the frosted brownies helps the topping set and allows cleaner slices.
  • Microwave chocolates carefully in short intervals to avoid burning.
  • You can substitute root beer extract if root beer is unavailable for a concentrated flavor.

Keywords: root beer float brownies, gooey brownies, chocolate brownies, root beer dessert, American desserts