Cream the butter until it is really light and fluffy. At least 3 minutes.

Gradually add the sugar. I add about 1/2 cup at a time. If you add too much you will be wearing it. So will your counters. And your ceiling.

It will be pretty thick.

Add the vanilla or whatever flavoring you are using.

Add 2 Tablespoons of cream and beat the frosting for a few minutes. If the frosting it too thick, add a little more cream until you get the consistency that you like.