1 1/2 c. butter
2 2/3 c. granulated sugar
6 eggs
1 1/4 c. cocoa
2 tsp. vanilla
1 1/2 c. flour
1/2 tsp. baking powder
1/4 tsp. salt
Chopped walnuts (optional)

Cream butter and sugar. Add eggs two at a time mixing well. Stir in cocoa and vanilla. Stir in flour, baking powder and salt. Pour into a greased cookie sheet or 9x13 pan (cookie sheet is best). Top with chopped walnuts if desired. Bake at 350 degrees for 35-45 minutes until the center has just lost its shine and toothpick comes out almost clean.