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A slice of chocolate cake with peanut butter frosting sits on a white plate next to a fork. The cake appears moist and is partially eaten, with crumbs scattered on the plate.
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Chocolate Mayonnaise Cake with Peanut Butter Frosting

Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Author Brooke Burks

Ingredients

For the Cake

  • 2 cups all purpose flour
  • 2/3 cup cocoa
  • 1.25 teaspoons baking powder
  • 1/4 teaspoon baking soda
  • 3 eggs
  • 1.66 cup sugar
  • 1 teaspoon vanilla
  • 1 cup mayonnaise
  • 1.33 cups water

For the Frosting

  • 3 cups powdered sugar
  • 1/3 cup creamy peanut butter
  • 1.5 teaspoon vanilla
  • 3-4 teaspoons water

Instructions

For the Cake

  • Preheat the oven to 350°. Prepare a 9x13 baking dish or cake pan with non stick spray. In a large bowl, mix eggs, sugar, vanilla, mayonnaise and water.
    3 eggs, 1.66 cup sugar, 1 teaspoon vanilla, 1 cup mayonnaise, 1.33 cups water
  • In another bowl, sift flour, cocoa, baking powder and baking soda. Add dry ingredients to wet in two stages, mixing on low to medium speed after each addition.
    2 cups all purpose flour, 2/3 cup cocoa, 1.25 teaspoons baking powder, 1/4 teaspoon baking soda
  • Pour into prepared pan and bake for 30 minutes or until a knife comes out clean. Alternatively, the center temperature should be around 205° for perfect cake. Cool completely before frosting.

For the Frosting

  • Cream peanut butter and vanilla. Add in powdered sugar a cup at a time until incorporated. May need to add the water while adding the powdered sugar to reach the desired consistency of frosting. This usually takes 3 to 4 teaspoons of water.
    3 cups powdered sugar, 1/3 cup creamy peanut butter, 1.5 teaspoon vanilla, 3-4 teaspoons water
  • Spread over cooled cake working from the center out to spread evenly.

Nutrition(All values are estimates only)

Serving: 1serving | Calories: 332kcal | Carbohydrates: 52g | Protein: 4g | Fat: 13g | Saturated Fat: 2g | Polyunsaturated Fat: 6g | Monounsaturated Fat: 4g | Trans Fat: 0.03g | Cholesterol: 33mg | Sodium: 157mg | Potassium: 104mg | Fiber: 2g | Sugar: 39g | Vitamin A: 48IU | Calcium: 31mg | Iron: 1mg

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