Root Beer Float Cake


Aug 12

Root Beer Float Cake – Root beer cake layers with root beer buttercream, root beer drip, fresh whipped cream and a cherry on top.

Cake on the Brain

I often get asked how I come up with my cake flavors, and the answer is never the same. Sometimes the ideas come to me at the most random times: on an airplane, in the shower, on a run, or even while I’m making another cake. Other times, I’m giving it more thought and trying to come up with new and interesting flavors by researching other cakes. And then there’s the moments when I’m eating a dessert and think to myself, “I need to recreate this” or “these flavors would be awesome in a cake.” No matter how it happens, I love when a good cake idea hits me. And when it does, I hit the kitchen as fast as I can.

Root Beer Float Cake

For this cake, the idea came when I was at Orson Gygi (a local bakery/kitchen supply store), looking at their candy flavorings. My eye was drawn to the LorAnn Oils Root Beer Flavor and I knew it had to be a cake, especially with Summer knocking on the door!

I looked online to see what root beer cakes have already been done. To my surprise, there weren’t many. Well, there are actually a lot of recipes out there that used a box mix and root beer, but there are hardly any that are completely from scratch. And the from-scratch recipes I did see were chocolate root beer cakes. Nope. Not what I was going for.

For my cake, I decided to use my own white cake as a base and make a few changes. The base of this cake is tender and light. It also doesn’t have any strong flavors that would take away from the root beer flavor. I just swapped the buttermilk for root beer and added the LorAnn Oils Root Beer Flavor. 

Buttercream and Drip

I then paired the cake with root beer buttercream and a root beer drip. For the drip, there are two ways to make it. I originally made it with white chocolate chips and root beer flavoring. However, before I poured it on my cake, I learned that Orson Gygi carries root beer baking chips (which, unfortunately are no longer manufactured) and had to get my hands on them to test them out. I loved them! The flavor is fantastic. Using the root beer chips in the drip would be my first choice for the cake. If you can’t get your hands on them, I’ve given you an alternative option in the recipe below.

I added a little whipped cream and other garnishes on the cake before serving it I’m so happy with how this cake turned out. The root beer flavor truly shines in this cake without being too overwhelming. It’s the perfect cake to kick off summer with and I can’t wait for you to make it!

Root Beer Float Cake

Prep

Cook

Inactive

Total

Yield 1 3-layer, 8-inch cake

Root beer cake layers with root beer buttercream, root beer drip, fresh whipped cream and a cherry on top.

Ingredients

For the Cake

  • 1 whole egg (I use extra large)
  • 3 egg whites (also extra large)
  • 1 cup root beer, I used A&W
  • 1 teaspoon pure vanilla extract
  • 2 teaspoons LorAnn Oils Root Beer Flavor
  • 3 cups, plus 2 tablespoons cake flour
  • 1 3/4 cups granulated sugar
  • 1 tablespoon plus 1 teaspoon baking powder
  • 3/4 teaspoon salt
  • 12 tablespoons unsalted butter, room temperature 

For the Buttercream

  • 2 cups unsalted butter, room temperature
  • 6 cups powdered sugar
  • 1 teaspoon pure vanilla extract
  • 2 teaspoons LorAnn Oils Root Beer Flavor
  • 2 tablespoons heavy cream

For the Drip (2 options)

or

  • 1 cup white chocolate chips
  • 3 teaspoons LorAnn Oils Root Beer Flavor
  • 1/4 cup heavy cream

For the Whipped Cream

  • 2 cups heavy whipping cream
  • 1 cup powdered sugar
  • 1 teaspoon pure vanilla extract

Garnish

  • SmashMallows root beer float marshmallows
  • Root beer baking chips
  • Shaved chocolate or chocolate sprinkles
  • Cherry

Instructions

For the Cake

  1. Preheat your oven to 350 degrees F. Prepare three 8-inch round cake pans by spraying each pan with non-stick spray, covering the bottom of the pan with parchment paper and spraying the parchment paper with the non-stick spray as well. Set aside.
  2. In a medium-sized mixing bowl, combine the whole egg, egg whites, vanilla extract and root beer flavor. Set aside.
  3. In the bowl of a stand mixer fitted with the paddle attachment, combine the cake flour, sugar, baking powder and salt. Mix on low speed for about 30 seconds.
  4. With the mixer on low speed, add the butter and root beer. Continue to mix on low until just combined and then increase to medium speed and mix for 1 minute.
  5. Scrape down the sides of the bowl and add the egg mixture in two additions, beating on medium speed after each addition until just combined and all the ingredients are thoroughly incorporated.
  6. Divide the batter into the three prepared cake pans, using a kitchen scale to measure equal parts in each pan. Bake for 20-25 minutes (my cakes took 20 minutes), or until a toothpick inserted into the center of the cake comes out clean.
  7. Let the cakes cool in the pans for 10 minutes and then invert onto wire racks until completely cool.

For the Buttercream

  1. In the bowl of a stand mixer fitted with the paddle attachment, beat the butter on medium speed for about 2 minutes, until light and fluffy.
  2. With the mixer on low speed, slowly add the powdered sugar, followed by the heavy cream, vanilla extract and root beer flavor.
  3. Continue to beat the frosting on medium speed for an additional 5-7 minutes, until the mixture has lightened in color and texture.
  4. Before frosting your cake, make sure to use a wooden spoon to beat the frosting by hand to push out any air pockets.

For the Drip

  1. If you use the root beer baking chips, heat your cream in the microwave for about 30-40 seconds. Pour the cream over the baking chips and let sit for about 5 minutes. Stir the mixture until smooth. If there are still chunks of baking chips, microwave the mixture for 10 seconds and stir again. Let cool slightly before pouring on your cake.
  2. If you use white chocolate chips, heat your cream in the microwave for about 30-40 seconds. Pour the cream over the baking chips and let sit for about 5 minutes. Stir the mixture until smooth. If there are still chunks of baking chips, microwave the mixture for 10 seconds and stir again. Add the root beer flavor and stir again. Let cool slightly before pouring on your cake.

For the Whipped Cream

  1. Combine all the ingredients in the bowl of a stand mixer fitted with the whisk attachment. Whip on high until stiff peaks form.

Assembly

  1. Level each of your cake layers with a cake leveler or serrated knife. Slather a small amount of frosting on your cake board to hold your cake in place. 
  2. Place the first cake layer, top side up, on the cake board and spread about 1 cup of frosting on top. Drizzle about 1-2 tablespoons of the drip on top of the frosting and spread evenly.
  3. Repeat step 2 with the second cake layer.
  4. Place the final cake layer, top side down, on top of the frosting and drip. Cover the entire cake with a thin coat of frosting to lock in the crumbs. Freeze the cake for about 10 minutes to set the crumb coat.
  5. Apply the rest of the frosting and top with the root beer drip, whipped cream, and garnishes. 
  6. If you don’t plan to eat the cake right away, hold off on adding the whipped cream, and freeze the cake in an airtight container. Allow to thaw for about 6 hours before serving. Add the whipped cream and garnishes before serving.

Courses Dessert

Cuisine Cake

16 thoughts on “Root Beer Float Cake

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  1. Made this cake over the weekend and while I didn’t personally have any, the people who did all said the same thing – Too dense.

    1. I’m sorry to hear that. It’s actually a very light and fluffy cake. Cakes can turn out dense on accident from a couple things: over mixing the batter or packing in too much flour when you measure the flour (you want to scoop the flour into the measuring cup with a spoon and then gently level off with a knife).

  2. I made the root beer buttercream and put it on vanilla cupcakes for a party. Everyone said “root beer cupcakes?” And then after a bite “wow! No way did you make these”. A huge hit (and very good!) and a recipe I’m sure to use again and again. Just wish the root beer oil came in a bigger bottle. Thank you!

  3. Hi,
    I’m planning to make this cake for a friend’s birthday. I will have to bring the cake to her place. My question is, should I put whipped cream on the cake before I leave the house? Or should I do it at her place?

    Thank you,

    A

      1. Thank you for your response. I forgot to ask, should I prepare the whipped cream at home and put it in a piping bag and finish the cake at my friend’s house? Or It’s better to make whipped cream at her house?

  4. Hi there!! Love your recipe, I am going to try it soon. What decorating tip did you use for the sides? I saw you used 1M for the whipped cream.