Broccoli Cheese Casserole
["2 Tbsp. butter or margarine", "3/4 c. chopped onion", "1 (8 oz.) pkg. frozen chopped broccoli", "1 (8 oz.) jar Cheez Whiz", "1 can cream of mushroom soup", "1/2 c. milk", "1 c. uncooked rice, cooked"]
["Saute onion in butter.", "Cook broccoli according to package directions in a 2-quart casserole.", "Cook, uncovered, for 30 minutes at 350\u00b0."]
["butter", "onion", "broccoli", "cream of mushroom soup", "milk", "rice"]