Butter Cream Icing

Hands down the best icing I've ever had.

1/4 cup Margarine or Butter (beat it)
1 to 2 cups Sifting icing sugar then add to butter
1 tsp vanilla
1 tsp of milk
Mix initial recipe until stiff then add a tsp of milk then add more icing sugar then milk etc. until you get enough icing.