Start by melting your butter in a medium saucepan over low heat.
Whisk the cocoa powder into the melted butter until it’s fully combined. At first, it might look a little grainy, but keep whisking.
Next, add powdered sugar and milk, alternating between the two.
Continue whisking until you’ve added all three cups of sugar and about ⅓ cup of milk.
If the icing looks too thick, add an extra tablespoon of milk at a time until you reach the consistency you like
Stir in the vanilla extract and a tiny pinch of salt.
Once everything is blended, remove the pan from the heat and let the icing cool slightly
