1 lb. butter
1 c. cocoa
1/2 to 1 c. peanut butter (optional)
2 tsp. vanilla
1 pinch of salt
2 (1 lb.) boxes powdered sugar

Melt butter in pan. Add cocoa, peanut butter, salt and vanilla. Stir in sugar. Put in buttered 9 x 13 inch pan. Cut when cool.