Saute 1 medium size chopped onion in 1 tablespoon butter. Add 1 cup of minute rice, 1 can cream of mushroom soup, 1 (8 ounce) jar of Cheez Whiz and 1 (10 ounce) package of completely thawed chopped broccoli. Mix well. Bake at 350 degrees for 20 minutes, in a 1 1/2 quart casserole.