How to Make a Kit Kat Cake

Updated: Aug. 23, 2023

Looking to add a bit of crunch and even more sweetness to your next cake? Then learn how to make a Kit Kat cake. It's SO easy!

Kit Kats are one of the most popular candies in the world. The two-in-one chocolate-covered wafer bar is available in so many uniquely delicious Kit Kat flavors—including traditional chocolate, matcha, vanilla, blueberry cheesecake, orange, mint dark chocolate and more. And cakes are a dessert perfectly designed for celebrating. When you combine the two, magic happens. We’ll teach you how to make a Kit Kat cake for your next party!

How to Make a Kit Kat Cake

You don’t have to be an expert baker to whip up a Kit Kat Cake that is sure to impress your guests. This cake is super simple to make and doesn’t take long at all.



  • Boxed chocolate cake mix
  • 2 containers chocolate frosting
  • 32 Kit Kat bars (8 packages of 4)
  • 1 cup M&M candies


Step 1: Bake the cakes

Use your favorite boxed chocolate cake mix and bake it according to directions in two 8-inch cake pans. Here are the best chocolate cake mix brands, according to the Taste of Home Test Kitchen—or use our chocolate cake recipe if you want to go the from-scratch route. Either way, you’ll want to let the cakes fully cool before frosting and decorating.

Step 2: Stack and frost the cakes

Frosting the kit kat cakeTMB Studio

Spread a generous, smooth layer of frosting between the layers and around the top of the cake and its outer layer. We love this rich chocolate frosting, or go with store-bought frosting to keep this Kit Kat cake recipe as easy as possible.

Step 3: Add the Kit Kat bars 

adding kit kat bars to cakeTMB Studio

“Break me off a piece of that….” You’ll need about 32 individual Kit Kat bars, so if you can find them in four per package, you’ll want to buy eight packages. Break the Kit Kat into individual wafer bars lengthwise. Gently press each wafer onto the cake vertically, side by side. Leave a tiny amount of space between each wafer (about 1/4 inch) to allow for easy slicing. Continue until the outside of the cake is coated with a “fence” of Kit Kats.

Step 4: Top the cake

Cover the top of the cake with M&M candies, slightly pushing them into the top layer of frosting to adhere. For an extra-festive presentation, tie a bow with a ribbon around the Kit Kat cake. (This will also help keep the Kit Kats in place until it’s ready to serve).

How to Store a Kit Kat Cake

You can store your Kit Kat Cake in an airtight container or covered in plastic wrap in the refrigerator for up to about a week—though we’d be surprised if it wasn’t eaten long before then!

How to Serve a Kit Kat Cake

Kit Kat Cake Ft21 F 0104 5 02TMB Studio

Unwrap your present of a cake by releasing the bow. When you cut into your cake, you’re bound to have some run away M&Ms, so don’t cut it on the very edge of a counter. The spacing between your wafers should make cutting even pieces of cake a breeze.

More Kit Kat Cake Flavor Combinations

If you want to take your Kit Kat cake to the next level, try out some of these fun variations:

  • Vanilla cake mix, white frosting and Matcha Kit Kat bars topped with raspberries
  • Chocolate cake mix and peanut butter buttercream frosting topped with Reese’s Pieces
  • Strawberry cake, strawberry frosting and white chocolate Kit Kats topped with strawberries

Complete your spread with some of our other favorite recipe trends, like Jell-O cookies or blueberry cookies. Or buy even more Kit Kats and go for a Kit Kat cheesecake!