Use an electric mixer to cream the cream cheese and butter together until smooth. Scrape down the sides of the mixing bowl with a rubber spatula halfway through.
Add the vanilla extract and mix in.
Start the mixer on low speed and slowly start adding in the powdered sugar. Stop and taste after the first 2 cups.
You can continue adding powdered sugar until the frosting is as sweet and thick as you like.
Use right away or refrigerate. Let come to room temperature after chilling.