The Best Brownies

6 oz unsweetened baking chocolate (or use equivalent of cocoa powder, conversion on box)
3 cubes butter
3 1/3 C sugar
6 eggs
1 1/3 C flour
3/4 tsp baking powder
1/4 tsp salt
3 tsp vanilla

Melt together the baking chocolate and butter, then add all other ingredients. Pour into an ungreased jelly roll pan or cookie sheet with edges. Bake 350 degrees fro 30 minutes. Cool, then you can frost if you want to.
Frosting: 3 T butter, melted; 3 oz unsweetened baking chocolate, melted (or cocoa powder); 3 C powdered sugar; 1/2 C milk; 1 tsp vanilla; 1/8 tsp salt - beat together!