Amaretto Butter Frosting 2/3 cup butter, softened 6 cups sifted confectioners' sugar 1/4 cup Amaretto 1 to 2 tablespoons milk 1 teaspoon vanilla extract Cream butter. Gradually add confectioners' sugar, beating until smooth. Add Amaretto and milk, beating until mixture reaches spreading consistency. Stir in vanilla extract. Makes 3 cups.