Source: More From Magnolia by Allysa Torey
1 cup butter, softened
5-7 cups confectioners sugar
1/2 cup milk
2 tsp. vanilla extract
Place butter in large mixing bowl. Add 2 cups of the sugar, and then the milk and vanilla. On medium speed, beat until smooth and creamy, about 3 to 5 minutes. Gradually add remaining sugar, 1/2 cup at a time, beating well after each addition until the icing is thick enough to be of good spreading consistency. You may not need all of the sugar. If desired, add a few drops of food coloring and mix thoroughly. Can store at room temp. in an airtight container for up to three days.