Whisk the confectioners’ sugar, 2 Tablespoons milk or heavy cream, and vanilla extract together. Add another Tablespoon of milk or heavy cream to thin out if necessary. For thicker icing, add a little more confectioners’ sugar.

Taste, then add a pinch of salt if desired.

If not using right away, cover and store icing in the refrigerator for up to 2 days.