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This 2 ingredient Root Beer Float Cake is made with just chocolate cake mix and root beer. It’s an easy dessert that’s perfect for parties or any occasion!

slice of chocolate root beer float cake with cool whip frosting and a cherry on top

This super easy root beer float cake is the latest pop cake recipe the kids and I have made. It may seem hard to believe, but all you need for this 2 ingredient cake recipe is a box of chocolate cake mix and some root beer!

No eggs, no butter, no oil. Really!

My youngest kiddo has been after me to make this root beer cake for a long time. He loves root beer, and he always orders a glass when we eat out. Typically, we don’t keep pop in the house, so it was a treat for him when we bought some for this cake!

How to Make a 2 Ingredient Cake with Cake Mix and Soda

All you do is add the dry cake mix to a mixing bowl. Then, you pour the root beer into the bowl. The batter will bubble and foam up, but it will look like regular cake batter when you mix it.

pour root beer into cake mix

You don’t even need an electric mixer when you make soda cakes. Just stir the batter with a spatula or large spoon until it’s smooth.

mix root beer and cake mix in a mixing bowl

Then, pour the chocolate cake batter into a lightly greased cake pan, and bake the cake for about 30 minutes.  Let the cake cool completely, and frost it with your favorite frosting.

pour cake batter into 9 x 13 baking pan

Because this root beer float cake is so light, I used Cool Whip to frost it. We also added some sprinkles, whipped cream and maraschino cherries — just like a root beer float!

chocolate root beer float cake with cool whip and maraschino cherries on a plate

Make it a Weight Watchers Cake Recipe

You easily make this dessert weight watchers friendly by using diet pop and light whipped topping. Or, use whatever frosting you want!

Pin this easy dessert to save the recipe!

root beer float cake with cool whip frosting with root beer float in background

More 2 Ingredient Soda Cake Recipes

Recipe for Root Beer Float Cake

5 from 8 votes

Root Beer Float Cake

By: Dee
This 2 ingredient Root Beer Float Cake is made with just chocolate cake mix and root beer. It's an easy dessert that's perfect for parties or any occasion!

Prep Time: 5 minutes
Cook Time: 30 minutes
refrigeration time: 30 minutes
Total Time: 1 hour 5 minutes
Servings: 12


  • 1 box chocolate cake mix
  • 1 12-ounce bottle root beer
  • Cool Whip Or your favorite frosting
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  • Preheat oven to 350 degrees
  • Lightly grease or Spray a 9 X 13-inch baking pan with cooking spray
  • Pour cake mix into a large mixing bowl
  • Pour root beer into bowl, and mix batter until completely blended
  • Pour batter into 9 X 13-inch baking pan
  • Bake for 25 minutes or until toothpick inserted into center comes out clean
  • Remove from oven, and allow to cool completely before frosting


Calories: 154kcal, Carbohydrates: 26g, Protein: 2g, Fat: 6g, Saturated Fat: 1g, Sodium: 297mg, Potassium: 119mg, Fiber: 1g, Sugar: 14g, Calcium: 54mg, Iron: 1.6mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Dessert
Cuisine: American
Like this? Leave a comment below!

I hope you enjoy this super easy 2 ingredient root beer float cake as much as we do!

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Recipe Rating


  1. Melanie J says:

    So yummy and fun to decorate like a root beer float for Birthdays or anytime!5 stars

    1. Dee says:

      Thanks! So glad you liked the cake!

  2. Edna says:

    Do you think this would work with gluten-free cake mix

    1. Dee says:

      I haven’t tried that, but I think it would. 🙂

  3. Mel says:

    I don’t think it gets easier than this to make a gorgeous and delicious cake!

  4. Dana says:

    I decided to try this dessert because it was so different from any cake I’d ever made, and I was not disappointed! Definitely the easiest cake I’ve ever made and tasted absolutely delicious5 stars

    1. Dee says:

      That is so sweet of you! Thanks, Dana!

  5. Jade Manning says:

    This cake is pure beauty! My whole family will demand this!5 stars

    1. Dee says:

      Sounds like my family. Thanks so much, Jade!

  6. James says:

    The kids saw this and had to have it. Easy to make and awesome to eat! Another great recipe, Dee!5 stars

    1. Dee says:

      Thank you so much, James! So happy you all are enjoying the recipes!

  7. Erin | Dinners,Dishes and Dessert says:

    This looks incredibly delicious! Love this so much!5 stars

    1. Dee says:

      Thanks so much, Erin! It did not last long here!

  8. Beth Pierce says:

    Love how quick and easily this comes together! Such an awesome looking dessert! Looking forward to enjoying this over the weekend!5 stars

    1. Dee says:

      Thanks, Beth! I hope you like it!

  9. Katerina @ diethood .com says:

    Oh boy, this cake sounds terrific!! I can’t wait to try it!!5 stars

    1. Dee says:

      It’s a lot of fun to make. Hope you enjoy it!

  10. Jocelyn (Grandbaby Cakes) says:

    This cake is glorious! I love the combo of chocolate and root beer!

    1. Dee says:

      Thanks, Jocelyn! It’s sounds different, but it’s so good!