With an electric mixer beat butter until light and fluffy. Add in powdered sugar and heavy cream a little at a time alternating and mixing between additions. Continue adding and mixing until all the powdered sugar and cream has been added. Add in vanilla and salt and mix until well incorporated.
Add food coloring if desired and mix, add additional food coloring until desired color is reached. You can also separate the frosting into smaller bowls to color separately if you want more than one color of frosting.
Notes
This Recipe Can be Doubled: Having a cookie decorating party or making cookies for a crowd? Truly you can just increase the recipe for as many as you need and freeze any leftovers.
Change up the flavor: Replace the vanilla with, peppermint, almond or buttercream extract to make it different.
Too thick: If frosting is too thick, add a few drops of milk or cream and whip to make a little thinner.
Variation tip: Add some cream cheese to make a cream cheese frosting.
Decorate: Use sprinkles or cookie toppers to make the cookies even cutter.