1/4 c. (1/2 stick) butter
1/3 c. cocoa
2 c. confectioners' sugar
1/2 c. evaporated milk
1 tsp. vanilla
Dash of salt
1 c. chopped nuts

In a saucepan over low heat, mix butter, cocoa, sugar, and milk. Add vanilla and salt. Mix until smooth. Add chopped nuts. Cool and pour over cake.