Never Fail Fudge Icing

Directions

1. 1
   Melt margarine in saucepan.
2. 2
   Add remaining ingredients.
3. 3
   Let come to a good rolling boil and boil for 1 minute.
4. 4
   Remove from heat.
5. 5
   Add 1 teaspoon vanilla.
6. 6
   Cool a few minutes in cold water, then beat well and spread on cake.
7. 7
   Will ice two 9-inch layers.