1/4 c. butter
1/4 c. evaporated milk
1 tsp. vanilla
1 lb. box powdered sugar
3/4 c. cocoa
1/4 tsp. salt

Melt butter in saucepan. Stir in milk and vanilla. Gradually add mixture of sugar, cocoa and salt. Mix until soft and creamy. Press into buttered pan. Chill and cut into squares.