Peanut Butter Frosting
["1/4 c. margarine", "1 c. sifted confectioners sugar", "1/4 c. peanut butter", "about 1 Tbsp. milk"]
["Cream margarine.", "Blend in part of sugar.", "Add peanut butter. Cream well.", "Alternate remaining sugar and milk.", "Beat until of spreading consistency.", "Makes about 1 cup."]
["margarine", "confectioners sugar", "peanut butter", "milk"]