3/4 c. butter
2 sq. unsweetened chocolate, melted
1 1/3 c. sugar
3 eggs
1 c. flour
1 tsp. baking powder
1/2 tsp. salt

Cream butter and sugar. Add eggs. Add melted chocolate. Add remaining ingredients. Pour onto greased and floured 13 x 9 x 2 inch cake pan (batter will be thick). Bake at 350 degrees for 25-30 minutes. Sift powdered sugar on top.