Wild Ham Casserole

1 box uncle ben's wild rice mix
1 (10 ounces) box chopped broccoli, cooked and drained
1 cup chopped ham
1 cup sharp cheddar cheese, cubed
1 can mushrooms, drained
1 can cream of celery soup
1 cup mayonnaise
2 teaspoon prepared mustard

Cook rice according to directions. Place rice on bottom of 13x9x2 pan. Layer on top; broccoli, cheese, ham and mushrooms. Combine remaining ingredients and put on top. Sprinkle with parmesan cheese and bake at 350 degrees for 45 minutes. Serves 4 or 6.