Melt butter and add chocolate, let melt till smooth on a low heat.

Add brown sugar, let it melt.

Turn heat off and add vanilla, both flours and gently fold till blended.

Then add the eggs and put in a greased baking dish.

Add some chocolate on top (optional)

Bake at 350° for about 30 minutes till toothpick comes out clean.

Let chill and powder with the powdered sugar.

May serve with icecream. Enjoy :)