Anyone know the recipe for a Peanut Butter Cake?

I am using white cake mix and icing. I can't find the recipe anywhereAnyone know the recipe for a Peanut Butter Cake?
Peanut Butter Cake with Frosting





Cake:


1 (18.25-ounce) package butter cake mix


1/2 cup smooth peanut butter


1/2 cup butter, softened


2/3 cup water


4 large eggs


1 cup sour cream





Peanut Butter Frosting (recipe below)





Preheat oven to 325*F (160*C). Grease and flour two 9-inch round cake pans. Set aside.


For cake, cream together peanut butter and butter until light and fluffy.Add eggs one at time mixing well after each one. Add cake mix alternately with the water; stirring until just combined. Fold in the sour cream well. Pour batter into prepared pans.


Bake for 25 to 30 minutes or until wooden pick inserted in center comes out clean. Allow cakes to cool in pan for 10 minutes on wire rack; turn out onto rack to cool completely. Frost when cool.





Peanut Butter Frosting:





4 cups powdered sugar


1/3 cup milk


1 cup peanut butter


1/2 cup butter, softened





With an electric mixer, cream together peanut butter and butter until light and fluffy. Add the powdered sugar. Slowly add milk until frosting is at desired spreading consistency.





Make one 2-layer (9-inch) cake.





Don't forget the sour cream. Your cake will be moist and delicious. Add sour cream to any cake mix or cake recipe and you will never have a dry cake.Anyone know the recipe for a Peanut Butter Cake?
VERY GOOD PEANUT BUTTER CAKE





Cake:


1 cup all-purpose flour


1 cup plus 2 tablespoons sugar


3 1/2 teaspoons baking powder


1 teaspoon salt


2 cups graham cracker crumbs


Peanut butter (at least 1/2 cup; if using more, decrease shortening by an equal amount)


3/4 cup shortening


1 cup plus 2 tablespoons milk


1 teaspoon vanilla extract


3 eggs


Frosting:


2 cups confectioners' sugar


2 tablespoons cocoa


8 tablespoons (1 stick) butter


1/3 cup heavy cream


1/2 cup peanuts, salted


2 cap-fulls vanilla extract








Preheat oven to 375 degrees F if baking with a metal dish; 325 degrees F if using a glass dish.


Sift flour, sugar, baking powder, and salt together. Add graham cracker crumbs, peanut butter, shortening, milk, and vanilla. Beat mixture with electric mixer on low until moistened, and then beat on medium for 2 minutes. Add eggs and beat for 1 minute. Bake in greased 9-inch by 13-inch pan for 30 to 35 minutes. Do not remove from pan to cool.





For the frosting: mix all of the ingredients together. Pour into a saucepan and bring mixture to a boil. Boil for 1 minute. Cool slightly. With a wooden spoon handle, poke a few holes in the cake, and then pour the warm frosting over it