1 package (8 ounces) cream cheese, softened
¼ cup butter or margarine, softened
2 teaspoons milk
1 teaspoon vanilla
4 cups powdered sugar
Beat cream cheese, butter, 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.
Frosts one 13x9 inch cake generously, or fills and frost one 8 or 9 inch two layer cake. Refrigerate any remaining.