Fresh Watermelon Cake! Made with a whole watermelon!

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whole fresh watermelon cake with a watermelon, and a slice

This is NOT a cake in the sense that there are dough and batter… there is nothing to bake!  This is a cake made out of a WHOLE WATERMELON!!  How adorable is that!  The cake in the photo used 1/2 a watermelon but you can use a whole depending on how big you’d like it to be!

It is SUPER easy and tastes awesome!

One question I had when I attempted this is … won’t the “frosting” slide off?  NO!  It actually doesn’t!  We ate half of the Watermelon Cake in the afternoon when I made it… and I stuck it in the fridge.  The following evening, we had it for dessert and it looked exactly the same as it did the day before!

Give this sweet little cake a try, your guests will love it and it’s a great and healthier alternative to regular cake!

fresh watermelon cake collage with whole cake, piece of cake, inside and close-up of top of cake

whole fresh watermelon cake with a watermelon, and a slice
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Review Recipe

Fresh Watermelon Cake

Prep Time 15 minutes
Total Time 15 minutes
Servings 12 servings
Author Holly Nilsson
This adorable cake is made out of fresh watermelon and comes together in just a few minutes. Such a sweet summery treat!


  • 1 whole watermelon for a large cake or ½ watermelon for a small cake (I used ½)
  • 1-2 tubs of dessert topping such a Cool Whip (I used Cool Whip light)
  • fresh berries and/or nuts for garnish

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  • Cut the ends off of the watermelon so it can stand upright.
  • Using a sharp knife, trim off the rind. Finally, trim around the watermelon to give it a "cake" shape. Don't worry, it doesn't have to be completely even or even close to perfect, the cool whip can make it look even and perfect and nobody needs to know. ;)
  • Once cut, use paper towels to completely dab the watermelon dry. You don't need to squeeze it but you want the surface as dry as possible. Frost the watermelon with the dessert topping using an offset spatula to make it look even.
    closeup of fresh watermelon cake dots
  • Use berries to decorate your cake… I took strawberries and sliced them. I then used a large smoothie straw to cut out circles and use them as the polka dots.
  • VOILA perfect and speedy Fresh Watermelon Cake!

Recipe Notes

Note: Using Cool Whip Light, the the topping did NOT slide off my watermelon even after a couple of days!

Nutrition Information

Calories: 140, Carbohydrates: 33g, Protein: 2g, Fat: 1g, Cholesterol: 3mg, Sodium: 17mg, Potassium: 440mg, Fiber: 1g, Sugar: 26g, Vitamin A: 2165IU, Vitamin C: 30.4mg, Calcium: 47mg, Iron: 0.9mg

(Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)

Keyword watermelon cake
Course Dessert
Cuisine American
Inspired by instructables


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Holly is a wine and cheese lover, recipe creator, shopping enthusiast and self appointed foodie. Her greatest passion is creating in the kitchen and making deliciously comforting recipes for the everyday home cook!

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