Cream together cream cheese and butter until light and fluffy, 4 minutes.
Add powdered sugar on low for one minute.
Increase speed to high and cream for 5 minutes, until light and fluffy.
Add vanilla on low.
Notes
Enough for an 8 or 9-inch cake or 24-30 cupcakes.To flavor, swap out the vanilla extract for others.Add lemon or orange zest.Deibel Lab Test Available (PDF)