1 cup unsalted butter, softened
3 to 4 cups powdered sugar
2 to 4 tablespoons milk or heavy cream
1 teaspoon vanilla extract
Pinch of salt
Beat the butter until smooth and creamy
Add the powdered sugar gradually
Add the milk or cream a little at a time
Mix in the vanilla extract and salt
Beat until light, fluffy, and white
Add more powdered sugar for a thicker frosting
Add more milk or cream for a softer frosting
Use immediately or store covered until ready to use