This cake is one of my favorites to make.
I’ve made it several times before, and I have gotten wonderful feedback of how “beautiful” it looks and how wonderful it tastes.  Little do the connoisseurs know how EASY it was to make too!

I wrote this instructable for two purposes.  To describe and show how to make the Best Buttercream Frosting ever and how to make and decorate the Watermelon Slices Cake.

This particular cake I made for my son’s schools cake walk.  I’ve made it before for work picnics, bake sales, and summer family gatherings.

If you’re here to make the Best Buttercream Frosting ever, check out Steps 1 and 2.

The whole cake can be made in one evening, if you purchase pre-made white frosting.  I put the estimated times it takes to make the components of the cake in each step.

The original recipe came from a book I’ve had for years, and I was fortunate to find the recipe on the internet for you all to see.  It’s a Betty Crocker recipe and can be found here: Watermelon Cake.

Please note that this cake doesn’t taste anything like a watermelon (unless you add watermelon jell-o flavoring.)  It just looks like a slice of one.  Enjoy!

Step 1: Ingredients and Tools

Buttercream Frosting Ingredients:
• 1 cup unsalted butter, softened
• 1 cup white frosting
• 4 tablespoons all-purpose flour
• 1 cup milk
• 1 teaspoon vanilla extract

For decorating you will also need:
• red food coloring
• green food coloring
• my friend, Wax Paper

Buttercream Frosting Tools:
• Saucepan
• Spoon to stir (I used a wooden one)
• Measuring cups/spoons
• Bowl to mix it in
• Bowl to cool the frosting mixture in
• Electric Mixer
• Spatula

Optional Frosting Choice: 1 container of white frosting (if you don’t make your own)

Cake Ingredients:
• 1/2 cup plus 2 tablespoons miniature semisweet chocolate chips
• 1 box white cake mix
• Water, vegetable oil and egg whites called for on cake mix box
• 1 package (0.13 oz) cherry-flavored or other red-colored unsweetened soft drink mix  OR 1 package (3 oz) watermelon flavored sugar-free jell-o powder
• Optional: 2/3 cup green jelly beans (not pictured because I don’t use them)

Standard Cake Baking Tools: Bowl to mix cake, electric mixer, two 8” or 9” circle cake pans, and oil or cooking spray to grease the pans.

Because this was a cake-walk cake that we donated, I also purchased a dollar store cake carrier.

About This Instructable


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Bio: I crochet and do crafts. Oh and I also work full time and have a family to take care of. I'm on here because ... More »
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