Preheat the oven to 375 degrees Fahrenheit.

In a large bowl, toss together the bread cubes, onion, carrot, celery and garlic, mixing well. In a separate small bowl, whisk together the chicken stock, oil, thyme, sage, salt and pepper. Pour over the “stuffing,” mixing until well coated. Transfer the “stuffing” mixture to a roasting pan that is about 10 x 14 inches and about two inches deep, mounding it in the centre of the pan.

Place the chicken on a cutting board. Remove any string and giblets. Cut the lemon and orange into quarters and stuff into the cavity. Gently pry the skin loose from the breast, without tearing or removing any skin. Massage the lemon and orange zest over the flesh of the breast, under the skin. Rub whatever zest is left on your hands over the top of the skin. Sprinkle the chicken with thyme, salt and pepper. Truss the legs together again with kitchen string and tuck the wings under the back of the chicken. Place the chicken on top of the “stuffing.” Don’t worry, it will not be able to cover all of the “stuffing.” Brush the chicken with oil. Drizzle about one third of the chicken stock over any exposed bread.

Roast in the centre of the preheated oven, drizzling with extra chicken stock every 30 minutes if the bread is becoming too browned or brittle, for about one and a half hours or until a meat thermometer inserted in the thickest part of the thigh registers 185 degrees Fahrenheit, or until the juices run clear.

Let stand for 10 minutes before carving and serving.