Peanut Butter Cake


This peanut butter cake is one of my favorite recipes given to me by a co-worker. It is the best peanut butter cake you will ever eat. The icing is like fudge.

close up view of a sliced Peanut Butter Cake with icing in a baking dish
Prep Time:
20 mins
Cook Time:
30 mins
Total Time:
50 mins



  • 2 cups all-purpose flour

  • 2 cups white sugar

  • 1 teaspoon baking soda

  • ½ cup milk

  • 2 large eggs

  • 1 teaspoon vanilla extract

  • 1 cup water

  • ½ cup butter

  • ½ cup vegetable oil

  • ½ cup peanut butter


  • ½ cup butter

  • ½ cup peanut butter

  • cup milk

  • 1 teaspoon vanilla extract

  • 4 ¾ cups confectioners' sugar


  1. Preheat the oven to 350 degrees F (175 degrees C). Grease a rimmed baking sheet.

  2. Make cake: Whisk together flour, sugar, and baking soda in a large bowl. Beat milk, eggs, and vanilla into flour mixture with an electric mixer on low speed until smooth.

  3. Place water, butter, oil, and peanut butter into a saucepan; cook and stir over medium heat until smooth, about 5 minutes. Stir peanut butter mixture into flour mixture until batter is well mixed; pour and spread onto the prepared baking sheet.

  4. Bake in the preheated oven until a toothpick inserted into the center of the cake comes out clean, about 20 minutes.

  5. Make icing: Melt butter and peanut butter in a saucepan over medium heat; stir until smooth. Mix in milk and vanilla until combined. Whisk in confectioners' sugar until icing is smooth, 3 to 5 minutes.

  6. Pour icing over warm cake.

Nutrition Facts (per serving)

458 Calories
22g Fat
62g Carbs
6g Protein
Nutrition Facts
Servings Per Recipe 20
Calories 458
% Daily Value *
Total Fat 22g 28%
Saturated Fat 8g 42%
Cholesterol 44mg 15%
Sodium 200mg 9%
Total Carbohydrate 62g 23%
Dietary Fiber 1g 4%
Total Sugars 51g
Protein 6g
Calcium 26mg 2%
Iron 1mg 5%
Potassium 124mg 3%

* 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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