2 sticks butter
1 c. crunchy peanut butter
4 tbsp. cocoa
1 tsp. vanilla
1 lb. powdered sugar (3 1/2 to 3 3/4 c.)

Melt butter and peanut butter in heavy saucepan. Remove from heat and add cocoa, vanilla, and sugar. Mix and pat into greased pan. Refrigerate.