1 c. butter
4 sq. unsweetened chocolate (4 ozs.)
2 c. sugar
1 c. unsifted flour
2 tsp. baking powder
2 tsp. vanilla
4 eggs

Preheat oven to 350 degrees. Grease a 9 x 13 pan. Melt butter and chocolate on low heat. Stir in sugar, flour, baking powder, and vanilla. Add eggs and beat well. Bake for 30 minutes.