Shelby's Caramel Icing

Directions

1. 1
   Melt margarine in a saucepan.
2. 2
   Add brown sugar and salt.
3. 3
   Cook over low heat, stirring constantly for 2 minutes.
4. 4
   Add milk, continue stirring until mixture comes to a boil.
5. 5
   Remove from heat.
6. 6
   Add powdered sugar and vanilla.
7. 7
   Beat well.
8. 8
   Add additional milk if icing is too thick.