mix all ingredients well (except the chicken) in a shallow pan.
arrange the chicken pieces on the pan and cover.
simmer until the chicken is nearly done.
turn the chicken once in a while to make sure all sides have absorbed the other ingredients.
remove the cover and let simmer until the sauce is reduced.
the chicken will be done when it has a rich brown color.
you can substitute honey for the brown sugar to make it more tasty, and if you don't want to use butter, you can use margarine instead. 