1.
HEAT oven to 325ºF. Coat 1 1/2-quart casserole with no-stick cooking spray.
2.
PLACE sausage in large skillet. Cook over medium-high heat until browned. Drain. Place in medium mixing bowl.
3.
HEAT oil in large skillet. Add onion, celery and garlic. Cook and stir over medium heat until celery is crisp-tender. Add mushrooms, Worcestershire sauce, rosemary and pepper. Cook, stirring constantly, 1 minute. Add to sausage. Mix well. Stir in stuffing mix, egg and chicken broth. Place in prepared dish. Cover.
4.
BAKE 20 minutes. Remove cover. Bake 5 to 10 minutes more or until heated through.