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Root Beer Float Brownies

Root Beer Float Brownies

Charlotte Hancey
Thick, fudgy brownies are made even better with the addition of root beer. Top them with a creamy root beer frosting for the yummiest brownies!
5 from 4 votes
Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Course Dessert
Servings 16


  • 1 1/3 cup all-purpose flour
  • 1 cup cocoa powder
  • 1 teaspoon kosher salt
  • 12 oz semisweet chocolate chips
  • 6 oz white chocolate chips
  • 8 tablespoons butter, cubed
  • 6 eggs
  • 1 cup granulated sugar
  • 1 cup brown sugar
  • 4 teaspoons vanilla extract
  • 16 oz root beer

For the frosting:

  • 1/4 cup butter, softened
  • 2 1/2 cups confectioners sugar
  • 1/4 cup root beer
  • 1/2 teaspoon root beer extract


  • Preheat oven to 375° F. Grease a 9x13 baking dish with baking spray.
  • In a medium-sized bowl, add flour, cocoa powder, and salt. Whisk to combine and set aside.
  • In a medium-sized bowl, add semisweet chips, white chips and butter. Microwave in 20-30 second increments until just melted. Stir to combine well and set aside to cool slightly.
  • Using an electric mixer (or by hand), mix eggs, white sugar, brown sugar and vanilla until combined well. Slowly mix in melted chocolate.
  • Add the flour mixture and root beer alternately. Mix until just combined. Pour into prepared dish and bake for 35-40 minutes or until center is just set. Let cool completely before frosting.
  • To make frosting, beat butter and one cup of confectioners sugar at a time on medium speed until combined. Add root beer and root beer extract then continue mixing until frosting is smooth.
  • Add frosting to top of cooled brownies and spread evenly. Enjoy!
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