Cream together the cream cheese and butter in the bowl of a stand mixer fitted with the whisk attachment.
8 ounces cream cheese, 6 tablespoon butter
Slowly sift in the powdered sugar and continue beating for 4 minutes for a smooth frosting. The mixture should be free of lumps before proceeding.
3 cups powdered sugar
Stir in the vanilla, and lemon juice if desired. Frost cupcakes.
1 teaspoon vanilla extract, Juice of ½ lemon
Notes
Makes enough to frost 24 cupcakes or a two layer 9-inch cake.Source: Adapted from The Silver Palate CookbookYou're Gonna Bake It After Allbakeitafterall.com