2 sticks butter
1/2 c. cocoa
2 c. sugar
1 c. flour
1 1/2 tsp. baking powder
4 eggs
2 tsp. vanilla flavoring
1 c. pecans or walnuts, chopped

Melt butter in large saucepan. Add sugar and cocoa; mix well. Add flour and baking powder. Last, add eggs and vanilla; mix well.

Bake at 350°F in 9 x 13 greased pan for 25 minutes. Cool and cover with aluminum foil before cutting into squares.