I use this recipe to frost half the cake. You could use it to frost the whole thing, but I like a good layer. So if you frost the whole pan, I would recommend doubling this recipe
18 oz package of cream cheese (I use light)
8Tablespoonsbuttersoftened
1cuppowdered sugar
1tspvanilla
Instructions
Blend together cream cheese and butter until smooth. Beat in powdered sugar and vanilla until smooth and blended.