Broccoli Casserole
["2 (16 oz.) pkg. frozen broccoli", "1 c. finely chopped celery", "1 c. sour cream", "1 can cream of mushroom soup", "1/2 c. minced onion (optional)"]
["Mix sour cream and soup.", "Stir into the broccoli.", "Sprinkle with grated Cheddar cheese.", "Use a 9 x 13-inch greased pan.", "Bake at 350\u00b0 for 45 minutes to 1 hour."]
["frozen broccoli", "celery", "sour cream", "cream of mushroom soup", "onion"]