Root Beer Float Cake Recipe
Root Beer Float Cake Recipe photo by Taste of Home
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Root Beer Float Cake Recipe

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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
MAKES:12-15 servings
TOTAL TIME: Prep: 15 min. Bake: 30 min. + cooling
MAKES: 12-15 servings


  • 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)

Nutritional Facts

1 piece: 203 calories, 8g fat (2g saturated fat), 27mg cholesterol, 216mg sodium, 31g carbohydrate (19g sugars, 0g fiber), 2g protein .


  1. 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.
  2. Pour into a greased 13x9-in. baking pan. Bake at 350° for 30-35 minutes or until a toothpick inserted near the center comes out clean. Cool completely on a wire rack.
  3. In a small bowl, combine the whipped topping mix and remaining root beer. Beat until soft peaks form. Frost cake. Store in the refrigerator. Yield: 12-15 servings.
Originally published as Root Beer Float Cake in Quick Cooking May/June 2000, p40

Reviews for Root Beer Float Cake

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ccanino 252521
Reviewed 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 250185
Reviewed 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 249864
Reviewed Jun. 28, 2016

"question can you use diet root beer"

peanutsnona76 248653
Reviewed May. 26, 2016

"Really nice cake-used root beer concentrate after reading reviews. delowenstein-please, stop wasting review space with your extensive recipe re-writes. It is rude."

ryanswife 246409
Reviewed 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 243139
Reviewed 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."

pauleywog 235582
Reviewed Oct. 25, 2015

"I added a little Root Beer flavoring to cake batter and frosting. Turned out good."

patdrake 231926
Reviewed Aug. 28, 2015

"won't be making this again. I had planned it for my 11 year old grandson's birthday and it BOMBED. just tasted like plain old cake. very disappointed."

dawnrosanne 231587
Reviewed Aug. 22, 2015

"Really disappointed. It did not taste like root beer at all. It was still a good cake, but just tasted like a regular yellow cake."

Water4Chocolate 230858
Reviewed Aug. 7, 2015

"This is not a review yet, but a comment and a thank you to all that contribute here! Many mentioned using root beer and Dr. Pepper in chocolate boxed cake. My recipes from the 80's used a coke in chocolate or fudge cake mix--they always came out so dry that I never used the recipe again. I'm so glad for to see this recipe today and your helpful ideas! I LOVE root beer flavor and look forward to making this recipe using R-B concentrate with the white or yellow cake mix. Also I'm thinking about using root beer (Barq's!) to enhance the flavor of Spice Cake mix too. Thanks again!"

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