Cream Cheese Frosting

I really like cream cheese frosting. I thought this one took a touch more effort, but very good as well. I got this recipe from Betty Crocker's New Cookbook.

Cream Cheese Frosting

1 package (8 ounces) cream cheese, softened
1/4 cup stick margarine or butter, softened (I always use butter)
2 teaspoons milk
1 teaspoon vanilla
4 cups powdered sugar (last time I made this I used only 3 cups powdered sugar)

Beat cream cheese, margarine, milk and vanilla in medium bowl with electric mixer on low speed until smooth.

Gradually beat in powdered sugar on low speed, 1 cup at a time, until smooth and spreadable. Frosts one 13 x 9-inch cake generously or fills and frosts one 8- or 9-inch two layer cake. Refrigerate any remaining frosting. It makes around 2 1/2 cups of frosting.