1 c. butter
1/2 c. cocoa
1 1/2 c. flour
1 tsp. baking powder
1 tsp. salt
3 eggs
2 c. sugar
2 tsp. vanilla

Melt butter, add cocoa; set aside. In medium bowl, mix eggs, sugar, vanilla. Add cocoa mixture. Add dry ingredients. Pour into 9x13 inch greased and floured pan. Bake at 350 degrees.