Margie's Frosting

Recipe is from Mazie.

½ cup butter
2 ½ TB flour
¼ tsp salt
½ cup milk
½ cup brown sugar
2 cups pulverized sugar
1 tsp vanilla
Nuts

Melt butter in saucepan. Remove from heat and add flour and salt. Stir in milk. Bring to a boil and boil 1 minute stirring constantly. Add brown sugar. Remove from heat and while still hot add 2 cups pulverized sugar and 1 tsp vanilla. Add nuts to part of the frosting to put between layers (I usually add nuts to all of it).