Easy Cream Cheese Frosting

Mamanags says: "Try out this recipe on My Eggless Carrot Cake or Evamyth's Eggless, Milkless, Butterless Spice Cake. I got this excellent recipe from Pabbydog, a member of http://www.allrecipes.com/. This frosting is enough for a 9x13 inch cake."

INGREDIENTS
1/4 cup butter, softened (ie at room temperature)
8 ounces cream cheese, softened (ie at room temperature)
2 cups confectioners' sugar (aka icing or powdered sugar), sifted
1 1/2 teaspoons vanilla extract

DIRECTIONS
1. Beat softened butter and cream cheese until well blended.
2. Add powdered sugar and vanilla. Beat until creamy.
3. Cake must be entirely cool before you put on this frosting.