2 sticks butter
2 cup sugar
1/2 cup cocoa
4 eggs
1 1/2 cup flour
2 tsp. Vanilla
1/2 cup chopped nuts

Beat until smooth. Fold in nuts. Pour in greased and floured 10 1/2 X 15 1/2 inch pan.

Bake at 350°F for 20-25 minutes. Do not over bake.