1/2 cup unsalted butter, softened
2 to 3 cups powdered sugar
2 to 3 tablespoons milk or heavy cream
1 to 2 teaspoons vanilla extract
Pinch of salt
Beat the butter until smooth and creamy
Add powdered sugar gradually
Add milk or cream one tablespoon at a time
Mix in vanilla extract and salt
Beat until light and fluffy
Adjust thickness with more powdered sugar or more milk
Use immediately or store covered until ready to use