Brush the chicken with the butter. Place the chicken and vegetables into a roasting pan. Season with the rosemary. Stir the stock and orange juice in a small bowl and pour half the stock mixture over the chicken and vegetables.
Roast at 375°F. for 45 minutes.
Stir the vegetables. Add the remaining stock mixture to the pan. Roast for 30 minutes or until the chicken is cooked through.
Tip: To quickly peel the onions, place them into a medium bowl. Pour boiling water over the onions to cover. Let stand for 5 minutes. Drain and slip off the skins.