You are here: Home » Recipes » Peanut Butter Cake Peanut Butter Cake Recipe by Favorite Recipes Press Yield 12 servings Chocolate meets peanut butter is this amazing peanut butter cake! PrintEmail Ingredients Cake:2 cups flour2 cups sugar1 teaspoon baking soda1/4 teaspoon salt1 cup water3/4 cup (1 1/2 sticks) butter or margarine1/2 cup vegetable oil1/2 cup peanut butter1/2 cup buttermilk2 -- eggs, beaten1 teaspoon vanilla extractPeanut Butter Frosting:1 cup sugar1/2 cup evaporated milk1 tablespoon butter or margarine1/2 cup extra-crunchy peanut butter1/2 cup miniature marshmallows1 teaspoon vanilla extract1/2 cup canned chocolate frosting Instructions Cake: Combine the flour, sugar, baking soda and salt in a bowl and mix well. Bring the water, butter, oil and peanut butter to a boil in a saucepan, stirring frequently. Add the peanut butter mixture to the dry ingredients and mix well. Stir in the buttermilk, eggs and vanilla. Spoon the batter into a greased 11×15-inch sheet cake pan. Bake at 350F for 20 minutes. Frosting: Combine the sugar, evaporated milk and butter in a saucepan. Bring to a boil, stirring occasionally. Boil for 2 to 3 minutes, stirring occasionally. Remove from heat. Add the peanut butter, marshmallows and vanilla and stir until blended. Spread the frosting over the warm cake. Spoon the canned frosting into a microwave-safe dish. Microwave for 20 seconds or until of a drizzling consistency. Drizzle over the cake. To make a three layer cake: Bake the layers in three 8-inch cake pans. Spread the Peanut Butter Frosting between the layers and over the top. Spread your favorite cream cheese frosting over the side of the cake, substituting 1/4 cup of the margarine with peanut butter. Recipe reprinted with permission from the Junior Welfare League’s Cooking by the Boot Straps (Junior Welfare League of Enid, Oklahoma, 2002).