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+ servings
A piece of peanut butter cake on a plate.
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5 from 1 vote

Peanut Butter Cake

Simple delicious easy baked peanut butter sheet cake is packed with peanut butter flavor and topped with a silky peanut butter and chocolate frosting or your favorite frosting recipe.
Prep Time10 minutes
Cook Time30 minutes
Additional Time1 minute
Total Time41 minutes
Course: cakes
Cuisine: American
Keyword: baking, cakes, dessert, peanut butter, sheet cake
Servings: 12 servings
Calories: 903kcal
Author: Courtney O'Dell

Ingredients

Cake:

  • 3 cups cake flour
  • 1 ¾ cups light brown sugar packed
  • 1 ¼ cup whole milk
  • ¾ cup creamy peanut butter
  • ½ cup unsalted butter softened
  • ½ cup vegetable oil
  • 4 large eggs
  • 1 tablespoon baking powder
  • 2 teaspoons vanilla extract
  • 1 teaspoon salt

Frosting:

  • 1 cup unsalted butter
  • 1 cup creamy peanut butter
  • ¼ cup unsweetened cocoa powder
  • 3 cups powdered sugar
  • ¼ cup heavy cream

Instructions

  • Preheat the oven to 350 degrees F and grease a 9x13 pan with cooking spray.
  • In a medium sized bowl, sift together the cake flour, baking powder, and salt. 
  • Using a stand mixer, combine the brown sugar and butter together until it becomes light and fluffy.
  • Add the vanilla and oil to the mixing bowl and mix until combined.
  • Once combined, increase the speed to medium-high until the batter is once again light and fluffy.
  • Add the peanut butter and mix until combined. 
  • Add the eggs one at a time.
  • Add the flour in 3 parts, alternating with the milk, starting and finishing with flour. 
  • Once the final part of flour is ready to be added, finish mixing by hand to prevent over mixing the batter.
  • Pour the batter into the prepared baking sheet.
  • Bake for 28-32 minutes or until a cake tester comes out clean.

Nutrition

Serving: 1g | Calories: 903kcal | Carbohydrates: 92g | Protein: 15g | Fat: 55g | Saturated Fat: 21g | Polyunsaturated Fat: 29g | Cholesterol: 131mg | Sodium: 525mg | Fiber: 3g | Sugar: 57g