Combine 6 oz. (i.e. 6 squares) of baker's chocolate and 2 sticks of butter and melt together. Add 2 cups sugar, 4 eggs, 1/2 cup flour (be careful when adding the eggs, they will need to be mixed in quickly or at lower heat, or you will get scrambled eggs). Stir well, add 1 tablespoon vanilla, and pour out into a greased glass baking pan. If you want to reduce the intensity of the brudge, sprinkle chocolate chips on top at this point. Bake at 325 degrees, 30-45 minutes or until a toothpick comes out clean. Remove from oven, allow to cool, and freeze for several hours.
One brudge should serve about fifty people. It's that dense.