Butter Frosting
["1/3 c. butter", "3 c. sifted confectioners sugar", "3 Tbsp. light cream", "1 egg yolk, beaten", "1 1/2 tsp. vanilla extract"]
["In a bowl, combine butter and sugar.", "Blend in egg yolk.", "Stir in cream and vanilla.", "Beat until smooth.", "Yields 2 cups."]
["butter", "confectioners sugar", "light cream", "egg yolk", "vanilla extract"]