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Root Beer Float Brownies

Root Beer Float Brownies have root beer baked right in! The root beer pairs perfectly with the chocolate and it’s all topped with Root Beer Buttercream!

Two Root Beer Float Brownies on a plate

I am always looking for a new, fun way to enjoy brownies! Plus, my kids a re huge root beer float lovers, so I thought it would be fun to combine the two!

First you start with delicious chocolate, both white and dark.  I’m an equal opportunity baker.

And then there’s the Root Beer..use whatever kind you like…just let it sit out a bit so there’s no foam.

After I baked up the brownies I let them cool…but I had to try a little bit know,  for research.

The root beer in the batter gave the brownies a fine crumb, but the melted chocolate gave them a rich fudgy texture.  Really yummy!  You can’t taste the root beer in the brownies, it just changes the texture and adds a layer of sweetness.

Then of course I topped the brownies with Root Beer Frosting and a quick drizzle of chocolate syrup. Perfection!

The frosting has a subtle root beer flavoring from a little root beer extract, but if you wanted less you could leave the extract out.

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Root Beer Float Brownies

  • Author: Shelly
  • Prep Time: 20 minutes
  • Cook Time: 25 minutes
  • Total Time: 45 minutes
  • Yield: 20 brownies 1x
  • Category: Brownies
  • Cuisine: Dessert


  • 2/3 cup flour
  • 1/2 cup cocoa powder
  • 6 oz chopped semi sweet chocolate
  • 3 oz white chocolate
  • 4 Tbsp. butter
  • 3 large eggs
  • 1/2 cup white sugar
  • 1/2 cup brown sugar
  • 8 oz. root beer
  • 2 tsp. vanilla
  • 1/2 tsp salt
  • 1/2 cup butter, room temperature
  • 1/3 cup root beer, no foam
  • 5 cups powdered sugar
  • 1/2 tsp. root beer extract (optional)


  1. Preheat oven to 375°F. Line a 9×9 baking dish with aluminum foil and spray lightly with cooking spray.
  2. Sift flour, cocoa powder and salt in a large bowl and set aside.
  3. Over a double boiler (or in microwave) melt the butter, semi-sweet and white chocolates together. Remove from heat when just melted and smooth. Allow to cool for 5 minutes.
  4. In the bowl of your stand mixer fitted with the paddle attachment, mix the eggs, sugars and vanilla together on medium speed for 1 minute. Slowly add in the cooled chocolate mixture and mix until smooth, about 30 seconds.
  5. Turn the mixer to low and add the flour and root beer in alternating portions until smooth, beginning and ending with the flour, scraping the sides of the bowl as necessary.
  6. Pour batter into your prepared pan and bake for 25 minutes, or until center is just set.
  7. Let cool completely.
  8. To make frosting, mix butter and powdered sugar in the bowl of your stand mixer fitted with the paddle attachment for 1 minute on medium-low speed. Slowly add in the root beer and extract, mixing until smooth and creamy.
  9. Spread on cooled brownies.


The root beer extract is optional and is only added to amp up the root beer flavor.

Keywords: Brownies

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54 comments on “Root Beer Float Brownies”

  1. Yes, I made these. I had to bake them for 40 min. before they were done. They taste great….however, the frosting falls off the brownie when cut. I made 1/2 the frosting recipe and it was already almost too thick. You certainly don’t need the whole recipe. They were fine, but I won’t make them again, due to hard to keep them in one piece to put them on a plate. Must eat with a fork. Flavor? fine….no root beer taste.

  2. I am a Pampered Chef consultant, and I can’t wait to make individual Root Beer Float Brownies in our fantastic Brownie Pan! I can also use many our of products to make the batter and frosting as well. Thanks for a great recipe! I’ll be using my husband as my guinea pig (uh, taste tester!) really soon as he LOVES root beer floats!

  3. Chung-Ah | Damn Delicious

    I’m not much of a root beer lover but Jason is a root beer FANATIC so I definitely have to make these for him!

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