Peanut Butter Fudge Cake


Chocolate cake, chocolate frosting, but with what a difference. Peanut butter is the magic ingredient. It is spread between the cake and the frosting.

Peanut butter fudge cake slices stacked on a plate and sprinkled with chopped peanut butter cups
1 to 9 - x inch sheet cake


  • 2 cups all-purpose flour

  • 2 cups white sugar

  • 1 teaspoon baking soda

  • 1 cup butter

  • ½ cup unsweetened cocoa powder

  • 1 cup buttermilk

  • 2 eggs, beaten

  • 1 teaspoon vanilla extract

  • 1 ½ cups creamy peanut butter

  • ½ cup butter

  • ¼ cup unsweetened cocoa powder

  • cup buttermilk

  • 4 cups sifted confectioners' sugar

  • 1 teaspoon vanilla extract


  1. Combine flour, white sugar, and baking soda in a large mixing bowl; set aside.

  2. Melt 1 cup butter or margarine in a heavy saucepan; stir in 1/2 cup cocoa. Stir in buttermilk, and eggs until well blended. Cook over medium heat, stirring constantly, until mixture boils. Remove from heat. Mix into flour mixture, stirring until smooth. Stir in 1 teaspoon vanilla. Pour batter into a greased and floured 13 x 9 inch baking pan.

  3. Bake at 350 degrees F (175 degrees C) for 20 to 25 minutes, or until an inserted wooden pick comes out clean. Cool 10 minutes on a wire rack. Carefully spread peanut butter over warm cake. Cool completely.

  4. To Make Frosting: Combine 1/2 cup butter or margarine, 1/4 cup cocoa, and buttermilk in a small sauce pan. Bring to a boil over medium heat, stirring constantly. Pour over confectioners' sugar, stirring until smooth. Stir in 1 teaspoon vanilla. Spread chocolate frosting over peanut butter on cake. Cut into squares.

Nutrition Facts (per serving)

684 Calories
35g Fat
87g Carbs
12g Protein
Nutrition Facts
Servings Per Recipe 14
Calories 684
% Daily Value *
Total Fat 35g 45%
Saturated Fat 16g 81%
Cholesterol 80mg 27%
Sodium 393mg 17%
Total Carbohydrate 87g 32%
Dietary Fiber 4g 13%
Total Sugars 68g
Protein 12g
Vitamin C 0mg 1%
Calcium 58mg 4%
Iron 2mg 12%
Potassium 322mg 7%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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