3/4 c. cocoa
3/4 c. butter
2 1/2 c. brown sugar
6 eggs
1 tsp. vanilla
2 c. flour
1 c. walnuts, optional

Melt butter. Mix in cocoa. Add remaining ingredients and mix with spoon. Bake in 9 x 13 inch pan at 350 degrees, approximately 40 minutes.