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Peanut Butter Texas Sheet Cake

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This Peanut Butter Texas Sheet Cake is a delicious peanut butter cake with the most amazing chunky peanut butter frosting.

peanut butter sheet cake in pan

Okay, my peanut butter loving friends: I definitely have a cake for you today. This is a totally great cake, but I feel like you do need to be a peanut butter lover to fully enjoy it. If you’re more into the peanut butter and chocolate combination, then I’d suggest baking this cake and then putting the chocolate frosting from my Texas Sheet Cake recipe on top. That would be delicious too!

ingredients displayed for making peanut butter sheet cake

Ingredients needed:

  • all purpose flour
  • white sugar
  • baking soda and salt
  • sour cream
  • large eggs
  • unsalted butter
  • water
  • creamy peanut butter
  • milk
  • powdered sugar
  • vanilla extract
  • chopped peanuts (optional)

four photos showing how to make peanut butter sheet cake

How to make Peanut Butter Texas Sheet Cake:

The complete, printable recipe is at the end of this post.

BAKE THE CAKE:

Preheat the oven to 350°F. Grease and flour a 10×15-inch pan.
 
In a large bowl, whisk together the flour, sugar, baking soda and salt. Beat in the sour cream and eggs. Set aside.
 
In a medium saucepan on low heat, combine the butter, water and peanut butter. Bring the mixture to a boil, then remove from heat. Cool slightly, and then add this mixture to the ingredients in the bowl. Whisk together until well-blended.
 
Pour the cake batter into the prepared pan. Bake for 20 minutes, or until a toothpick inserted into the center comes out clean.

close up peanut butter sheet cake frosting with rubber spatula

PREPARE THE ICING:

In a large saucepan, combine the peanut butter, milk and butter. Bring to a boil, and then remove the pan from heat. Stir in 2½ cups of powdered sugar and vanilla. Stir in the peanuts (if using).

peanut butter sheet cake in pan

Spread the chunky peanut butter frosting over the warm cake.

two slices peanut butter sheet cake stacked on plate

Of course, the best way to break up the peanut butter monotony is to add a big scoop of vanilla ice cream on top when you serve it. Then it will be perfect. Enjoy!

two slices peanut butter sheet cake stacked on plate with scoop vanilla ice cream on top

The Best Cake Recipes:

peanut butter sheet cake in pan

Peanut Butter Texas Sheet Cake

RecipeBoy.com
Makes enough for a crowd- a very good cake!
Print Recipe Pin Recipe
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Course Dessert
Cuisine American
Servings 16 servings
Calories 540 kcal

Ingredients
  

CAKE:

  • 2 cups all purpose flour
  • 2 cups granulated white sugar
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • ½ cup sour cream
  • 2 large eggs
  • 1 cup (2 sticks) unsalted butter
  • 1 cup water
  • ⅔ cup creamy peanut butter

ICING:

  • ⅔ cup creamy peanut butter
  • 5 tablespoons milk
  • ½ cup (1 stick) unsalted butter
  • 2½ cups powdered sugar
  • 1 teaspoon vanilla extract
  • 1 cup chopped peanuts (optional)

Instructions
 

BAKE THE CAKE:

  • Preheat the oven to 350°F. Grease and flour a 10x15-inch pan.
  • In a large bowl, whisk together the flour, sugar, baking soda and salt. Beat in the sour cream and eggs. Set aside.
  • In a medium saucepan on low heat, combine the butter, water and peanut butter. Bring the mixture to a boil, then remove from heat. Cool slightly, and then add this mixture to the ingredients in the bowl. Whisk together until well-blended.
  • Pour the cake batter into the prepared pan. Bake for 20 minutes, or until a toothpick inserted into the center comes out clean.

PREPARE THE ICING:

  • In a large saucepan, combine the peanut butter, milk and butter. Bring to a boil, and then remove the pan from heat. Stir in 2½ cups of powdered sugar and vanilla. Stir in the peanuts (if using). Spread the frosting over the warm cake.

Nutrition

Serving: 1servingCalories: 540kcalCarbohydrates: 61gProtein: 8gFat: 31gSaturated Fat: 15gPolyunsaturated Fat: 4gMonounsaturated Fat: 11gTrans Fat: 1gCholesterol: 76mgSodium: 250mgPotassium: 169mgFiber: 1gSugar: 46gVitamin A: 640IUVitamin C: 0.1mgCalcium: 36mgIron: 1mg
Keyword peanut butter cake, texas sheet cake
Tried this recipe?Let us know how it was!
Recipe Rating




Sherrie Collis

Monday 15th of May 2023

There is no mention of when to add the 2 cups granulated white sugar in the cake directions.

RecipeGirl

Tuesday 16th of May 2023

sorry about that-- with the flour!

Dea

Saturday 13th of May 2023

Where do the 2 cups of white sugar go??

RecipeGirl

Tuesday 16th of May 2023

So sorry about that- with the flour :)

Angela

Thursday 11th of May 2023

Should the butter be melted or room temp?

RecipeGirl

Tuesday 16th of May 2023

For both the cake and the frosting, the butter is cooked in a saucepan... so it will melt :)