Ham and Rice Casserole (Revised)

1 box Uncle Ben’s wild rice mix
1 (10 ounce) box chopped broccoli, cooked and drained
1 cup sharp Cheddar cheese, cubed or shredded
1 cup ham, chopped
1 can mushrooms, drained
1 can condensed cream of celery soup
1 cup mayonnaise
2 teaspoons prepared mustard
Parmesan cheese

Cook rice according to directions.
Place rice on bottom of 9 x 13 pan. Layer on top; broccoli, cheese, ham and mushrooms. Combine remaining ingredients (cream of celery soup, mayonnaise, mustard) and put on top. Sprinkle with Parmesan cheese. Bake at 350 degrees for 45 minutes.