Gather 1/2 cup unsalted butter, softened
Add 2 cups powdered sugar
Add 1 to 2 tablespoons milk or cream
Add 1 teaspoon vanilla extract
Beat the butter until smooth
Gradually mix in the powdered sugar
Add the milk or cream a little at a time
Add the vanilla extract
Beat until light and fluffy
Add more milk for a thinner frosting
Add more powdered sugar for a thicker frosting
Use immediately or store covered in the refrigerator