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5.0 from 3 votes

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 Time
10 mins
Cook Time
10 mins
Additional Time
1 min
Total Time
41 mins
Servings: 12 servings
Calories: 903 kcal
Course: Cake
Cuisine: American

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

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

Nutrition Information

Serving 1g Calories 903kcal (45%) Carbohydrates 92g (31%) Protein 15g (30%) Fat 55g (85%) Saturated Fat 21g (105%) Polyunsaturated Fat 29g Cholesterol 131mg (44%) Sodium 525mg (22%) Fiber 3g (12%) Sugar 57g (114%)

Nutrition Facts

Serving: 12servings

Amount Per Serving

Calories 903

% Daily Value*

Serving 1g
Calories 903kcal 45%
Carbohydrates 92g 31%
Protein 15g 30%
Fat 55g 85%
Saturated Fat 21g 105%
Polyunsaturated Fat 29g 171%
Cholesterol 131mg 44%
Sodium 525mg 22%
Fiber 3g 12%
Sugar 57g 114%

* Percent Daily Values are based on a 2,000 calorie diet.