2 1/4 cups
1/2 cup butter, softened
1 (8-ounce) package cream cheese, softened
1 (1-pound) package powdered sugar, sifted (4 1/2 cups)
1 teaspoon vanilla extract
Beat butter and cream cheese at medium speed with an electric mixer until smooth. Gradually add powdered sugar, beating at low speed until light and fluffy. Stir in vanilla.