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Root Beer Float Cake

I add root beer to both the cake batter and fluffy frosting of this summery dessert to get that great root beer float taste. Serve this moist cake to a bunch of hungry kids and watch it disappear! —Kat Thompson, Prineville, Oregon
  • Total Time
    Prep: 15 min. Bake: 30 min. + cooling


  • 1 package white cake mix (regular size)
  • 1-3/4 cups cold root beer, divided
  • 1/4 cup canola oil
  • 2 large eggs
  • 1 envelope whipped topping mix (Dream Whip)


  • In a large bowl, combine cake mix, 1-1/4 cups root beer, oil and eggs. Beat on low speed for 2 minutes or stir by hand for 3 minutes.
  • Pour into a greased 13x9-in. baking pan. Bake at 350° for 30-35 minutes or until a toothpick inserted in the center comes out clean. Cool completely on a wire rack.
  • In a small bowl, combine the whipped topping mix and remaining root beer. Beat until soft peaks form. Frost cake. Store in the refrigerator.
Nutrition Facts
1 piece: 203 calories, 8g fat (2g saturated fat), 27mg cholesterol, 216mg sodium, 31g carbohydrate (19g sugars, 0 fiber), 2g protein.
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  • Deborah
    Jul 13, 2019

    Question I don't have any root beer handy but I do have A

  • Sharon
    Feb 19, 2019

    I have made this several times, and it always disappears quickly. For kids I make cupcakes. Love it.

  • KristineChayes
    Feb 12, 2019

    This Root Beer Float Cake was very good. I added one teaspoon of Root Beer extract to the cake batter to up the root beer flavor. My family enjoyed it!

  • Naomie
    Nov 12, 2017

    Love this cake! But who sells whipped topping mix anymore? I couldn't find it anywhere in 6 markets. I just made whipped cream and used RB concentrate and it turned out great!

  • ccanino
    Aug 11, 2016

    This is a favorite of my daughter even now that she is 19. LOL! We like to use 2 envelope whipped topping mix. Also, I noticed that the higher quality the Root Beer the better this recipe.

  • Suelon
    Jul 7, 2016

    First time followed recipe and no flavor. Tried again using the root beer concentrate as well in cake /frosting and MUCH better! Will make again and add even MORE concentrate (3-4 tsp) and think it will be perfect then! Luv2craftginny- cannot see why you could not use diet root beer

  • luv2craftginny
    Jun 28, 2016

    question can you use diet root beer

  • peanutsnona76
    May 26, 2016

    Really nice cake-used root beer concentrate after reading reviews.

  • ryanswife
    Apr 1, 2016

    I really liked this cake. It turned out good. My husband usually likes only chocolate things, so he wasn't impressed. I tried this because I'm sick of only making chocolate. I will make it again just for something different.

  • horselady55
    Feb 3, 2016

    I made this for my granddaughter's birthday. Oh My Gosh, how sad! It wasn't very good. :( She loves root beer. We couldn't hardly taste the root beer. She was sooooo disappointed. Very Sad.