Peanut Butter Frosting - cooking recipe

Ingredients

6 Tbsp. butter
1 1/2 Tbsp. peanut butter
3/4 tsp. vanilla
2 1/2 c. confectioners sugar
1 egg yolk
1 1/2 Tbsp. milk

Preparation

Cream the butter, peanut butter and vanilla together until butter is softened.
Gradually add the confectioners sugar, beating well after each addition.
Beat in the egg yolk.
Beat in enough of the milk until frosting is of spreading consistency.