Chocolate Fudge Cake with Peanut Butter Frosting

This Chocolate Fudge Cake with Peanut Butter Frosting is such a fantastic combination. It’s rich, creamy, smooth, decadent, and to die for.

hot fudge cake on a plate

Chocolate Fudge Cake with Peanut Butter Frosting

Let me clarify to start – when I say ‘Fudge Cake‘, you might think this is a lava cake. It is not. The fudge is baked into the cake batter, and this is actually a moist and delicious sheet cake.

hot fudge cake

In fact, when making the batter for this cake, of course I tasted after mixing. Who wouldn’t? Let me tell you. The batter of this cake tasted like fudge ice cream, like no other cake batter.

This fudge cake actually has three types of chocolate: the chocolate fudge, chocolate chips, and cocoa. It results in a dense yet moist {thanks to the buttercream} cake that is full flavour.

hot fudge cake

To top the cake, is the peanut butter frosting. So good! The frosting is rich and fluffy. The ingredients mix very well resulting in a whipped frosting that is so creamy.

Really, what could beat the peanut butter and chocolate combination! Well, the answer is with the addition of buttermilk and hot fudge sauce. Over the top!

hot fudge cake

I could have made this cake prettier and very easily with some frosting piping and sprinkled peanuts or shaved chocolate. And you totally could.

Yet I wanted to illustrate how perfect this cake recipe is for the everyday as well. A just because cake when you need an amazing dessert cake.

Enjoy this recipe my friends! We hope you love it as much as we do!

hot fudge cake

For other cake recipes to try, this Rolo Poke Cake might be perfect – Mmmmm, chocolate! Another great sheet cake to try is this Moist Chocolate Banana Cake.

Since it is getting close to the fall season {I know, I had to bring it up}, also try my Pumpkin Bundt Cake.

hot fudge cake

Chocolate Fudge Cake with Peanut Butter Frosting

Yield: 12
Prep Time: 15 minutes
Cook Time: 1 hour
Total Time: 1 hour 15 minutes

This Chocolate Fudge Cake with Peanut Butter Frosting is such a fantastic combination. t’s rich, creamy, smooth, decadent, and to die for.



  • 1/2 cup butter
  • 1 cup sugar
  • 1/4 cup cocoa powder
  • 2 eggs
  • 2 tsp vanilla
  • 1/2 cup hot fudge sauce
  • 1/4 cup chocolate chips
  • 1/2 cup buttermilk
  • 1/4 tsp baking soda
  • 1 1/4 cup flour


  • 1/2 cup butter
  • 3/4 cup smooth peanut butter
  • 3 cups powdered sugar
  • 5-6 tbsp heavy cream, as needed


  1. Preheat oven to 350 and line a 9"x9" pan with parchment paper and spray with cooking spray. 
  2. cream the butter and sugar together until fluffy
  3. stir in the cocoa powder and mix until combined, and add the eggs and the vanilla, and mix until combined.
  4. Combine the hot fudge sauce and chocolate chips in a microwaveable bowl and microwave in 15 second increments until melted. When evenly melted, pour into the batter mixture and mix well
  5. Add the buttermilk to a measuring cup and then add the baking soda and stir. Then add this into the batter mixture along with the flour - and mix well
  6. Pour the batter into the lined and sprayed baking pan and bake for 45-55 minutes or until a toothpick inserted into the middle comes out clean.
  7. While the cake is cooking make the frosting: using a large bowl and a mixer, beat the butter and peanut butter together. Add in the powdered sugar in 1/2 cup increments, mixing as you go. Add in the heavy cream one tbsp at a time until consistency is reached
  8. When the cake is cooled, spread the frosting as you wish - enjoy!
Nutrition Information:
Yield: 12 Serving Size: 12 Servings
Amount Per Serving: Calories: 555Saturated Fat: 13gCholesterol: 78mgSodium: 319mgCarbohydrates: 74gFiber: 2gSugar: 54gProtein: 8g

Did you make this recipe?

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hot fudge cake on a plate with text


  1. This cake sounds delish. I appreciate the calorie count as I tend to want to limit my kids’ sweet intake. I wonder if the recipe would work with Wow Butter.

  2. That sounds like an awesome recipe. I am not a baker, but my wife loves to bake. I am going to ask her to make this for me.

  3. This looks really yummy and the peanut butter frosting is something I haven’t seen but I bet it’s really tasty

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