Preheat oven to 350°. Prepare stuffing mix according to package directions, using only 1-1/2 cups water., In large bowl, combine chicken, broccoli and soup; transfer to a greased 11x7-in. baking dish. Top with stuffing; sprinkle with cheese. Bake, covered, 20 minutes. Uncover; bake until heated through, 10-15 minutes longer. Freeze option: Transfer individual portions of cooled casserole to freezer containers; freeze. To use, partially thaw in refrigerator overnight. Transfer to a microwave-safe dish and microwave, covered, on high until a thermometer inserted in center reads 165°, stirring occasionally and adding a little broth if necessary.