Step 1

Place butter in the bowl of a stand mixer with paddle attachment. Mix on low speed until smooth and fluffy, about a minute.

Step 2

Add the sifted powdered sugar a spoonful at a time over medium-low speed. Keep doing this until all of the sugar is added, scraping down the sides as necessary.

Step 3

Add the salt and stir to combine, add in the vanilla and stir to combine. Add the milk and whip the frosting for 3-4 minutes until light and fluffy.