Preheat the oven to 350° and spray a large casserole dish with vegetable spray.
Brown the sausage in a skillet. Drain. Sauté the onion, celery, and green pepper in the same skillet until tender. Combine the sausage, vegetables, sweet potatoes, orange peel, and parsley in a large bowl. Add the chicken broth, orange juice, and eggs, blending well. Combine with the stuffing mix. Transfer the stuffing mix to the prepared dish. Bake for 1 hour.