Using an electric hand mixer or stand mixer fitted with a paddle attachment, beat the cream cheese until smooth. Add the butter and beat again until fully mixed.
Add the vanilla and salt, mixing again.
Start with 3 cups of powdered sugar, mixing until no dry spots remain. If the frosting is thick and holds its shape, it is all finished. If it starts to fall, slowly add up to 1 cup of powdered sugar by 2 tablespoon increments until it does.
Use it on any recipe that calls for cream cheese frosting.
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