Name: Easy peanut butter chocolate sheet cake
Prep time: 20 min
Cook time: 40 min
Total time: 180 min
Ingredients: 2 cups cake/all purpose flour; 2 cups sugar; ½ cup cocoa powder; 2 teaspoons baking powder; 1 teaspoon salt; 1 cup buttermilk; 2 eggs; ½ cup canola or vegetable oil; 1 cup smooth peanut butter; 1 cup hot black coffee; ½ cup soft butter; 2 tablespoons smooth peanut butter; 5 cups powdered sugar / icing sugar (sifted); 3 tablespoons cocoa powder (sifted); 2 tablespoons cooled coffee; 2-3 tablespoons milk; 1 cup melted dark chocolate (cooled); sprinkles (to decorate)

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This one-bowl, easy peanut butter chocolate sheet cake is just dreamy and would you just look at those swirls of fudgy frosting? I mean.

I have come to the conclusion that the most intense craving, is a craving for chocolate cake. I thought it was only me who needed chocolate cake Right now when the craving struck but it seems most of my friends are exactly the same way. And who has the time or energy to spend hours baking a cake when the craving has struck? No-one, that’s who!

This easy, one-bowl peanut butter chocolate sheet cake is a variation of my absolute favorite Chocolate peanut butter cake recipe. I’ve made that recipe so many times, I can almost do it in my sleep by now. And even though it’s not much more complicated than this recipe, it requires a few more steps. I’ve cut out those steps here and can honestly say this sheet cake is pretty much identical to my classic recipe. The chocolate flavor is intense with a hint of that delicious peanut butter nuttiness.

I love baking it in a sheet pan because it makes serving so much easier making it perfect for a birthday party. I also find the ratio of cake to fudgy chocolate frosting is more in balance. Even the frosting-haters in my family loved this frosting. It’s almost like chocolate mousse in texture and is the most chocolatey-chocolate frosting I have ever tasted. Everything you want when the craving strikes.

How to make chocolate sheet cake

Pre-heat the oven to 180°C (350 degrees F) and line a rectangular cake pan or baking dish with parchment paper. In a large mixing bowl, whisk the flour, sugar, baking powder, salt and cocoa powder together. Add the eggs, buttermilk, oil, peanut butter and hot coffee. The hot coffee adds moisture to the cake but coffee also has a great ability to make chocolate taste even more like chocolate. If you don’t want to use coffee, boiling hot water can also be used. Mix the cake batter until just combined then pour into the prepared baking dish. Place in the oven and allow to bake for 35-40 minutes or until a toothpick inserted comes out clean.

Remove the cake from the oven and allow to cool completely before frosting.

To make the frosting, whip softened butter and peanut butter until light and fluffy. Add sifted powdered sugar/icing sugar and cocoa powder. Pour in cooled coffee and milk and whip until smooth. Slowly pour in cooled, melted chocolate and mix until smooth and glossy. Add a pinch of salt (optional). Top the sheet cake with swirls of fudgy frosting and decorate with sprinkles.

How to make moist chocolate cake

Fat and liquid adds moisture to cake recipes. In this recipe, the combination of oil (you can also use melted butter), buttermilk, hot coffee and peanut butter ensures the finished cake is moist and fudgy.

What frosting goes best with chocolate cake?

A fudgy, chocolate frosting is the perfect topping for chocolate cake. Classic buttercream made with softened butter and powdered sugar (icing sugar), cocoa powder and a splash of milk is always delicious. To add more flavor, use cooled coffee which makes the chocolate flavor even stronger and add a pinch of salt.

Can chocolate cake be frozen?

Yes, chocolate cake freezes very well. To freeze: wrap baked and cooled (but not frosted) cake well with parchment paper followed by a foil or plastic wrap. Freeze for up to 3 months and thaw completely before using.

Chocolate cake recipes:

Easy peanut butter chocolate sheet cake

This one-bowl, easy peanut butter chocolate sheet cake is just dreamy and would you just look at those swirls of fudgy frosting? I mean.

4.75 from 8 votes

Print Pin Rate

Course: Baking, Cake, Chocolate cake

Cuisine: American

Keyword: Chocolate cake, chocolate cake recipe, chocolate sheet cake

Prep Time: 20 minutes

Cook Time: 40 minutes

Cooling time: 2 hours

Total Time: 3 hours

Servings:

Calories: 628kcal

Author: Alida Ryder

Ingredients

for the cake

2 cups cake/all purpose flour
2 cups sugar
½ cup cocoa powder
2 teaspoons baking powder
1 teaspoon salt
1 cup buttermilk
2 eggs
½ cup canola or vegetable oil
1 cup smooth peanut butter
1 cup hot black coffee

for the chocolate peanut butter frosting

½ cup soft butter
2 tablespoons smooth peanut butter
5 cups powdered sugar / icing sugar sifted
3 tablespoons cocoa powder sifted
2 tablespoons cooled coffee
2-3 tablespoons milk
1 cup melted dark chocolate cooled
sprinkles to decorate

Instructions

Pre-heat the oven to 180ºc and line a rectangular sheet pan/cake pan with baking paper.
In a large bowl, whisk together all the dry ingredients.
Add the remaining ingredients and mix at medium speed for 2 minutes until well combined, scraping down halfway to make sure all the ingredients are incorporated.
Transfer the batter to the prepared cake pan and place in the oven.
Allow to bake for 35-40 minutes or until a skewer inserted comes out clean.
Remove from the oven and allow to cool completely before frosting.
To make the frosting, beat together the butter and peanut butter.
Add the icing sugar, cocoa powder, coffee and milk and beat until thick and smooth.
While mixing, slowly pour in the chocolate and allow to mix into the frosting. Mix for a further 1-2 minutes until the frosting is whipped and well combined.
Spread the frosting onto the cooled cake and decorate with sprinkles.

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