Vanilla Buttercream Frosting

1 cup (2 sticks) unsalted butter, very soft
8 cups confectioners' sugar
1/2 cup milk (I used whole milk)
2 teaspoons vanilla extract

Place butter in a large mixing bowl. Add 4 cups of the sugar and then the milk and vanilla. Beat until smooth and creamy. Gradually add the remaining sugar, 1 cup at a time, until icing is thick (you may not need to use all of the sugar). If desired, add a few drops of food coloring and mix well. I used blue food coloring to make a teal colored frosting.

Enough icing to frost 2 dozen cupcakes.