Swiss 'N Chicken Casserole
["4 c. chopped cooked chicken breasts", "2 c. sliced celery", "2 c. croutons", "2 (8 oz.) pkg. shredded Natural Swiss cheese", "1 c. Miracle Whip", "1/2 c. milk", "1/4 c. chopped onion", "1 tsp. salt", "1/8 tsp. pepper", "1/4 c. chopped walnuts (optional)"]
["Preheat oven to 350\u00b0.", "Mix all ingredients.", "Spoon into a 2-quart casserole dish.", "Sprinkle with walnuts, if desired.", "Bake for 40 minutes, or until thoroughly heated."]
["chicken breasts", "celery", "croutons", "shredded Natural Swiss cheese", "Miracle", "milk", "onion", "salt", "pepper", "walnuts"]