Recipe of the week - chicken casserole

One of my favorite "go to" recipes.  Grandmother made this a lot and I still love it.  It tastes great, it's easy and it brings back such wonderful memories!  Enjoy!

2 cups cook diced chicken
1 cup slightly cooked celery
2 cups cooked rice
1 can cream of mushroom soup
3 Tblsp chopped onion
3/4 cup mayonnaise
1 can sliced water chestnuts, drained
1/2 cup sliced almonds (optional)
2 cups crushed cornflakes
1/2 stick margarine, melted

Mix first 8 ingredients;  put in medium-sized casserole.  Mix cornflakes with melted butter;  sprinkle over top of casserole.  Bate 45 minutes at 350 degrees.  (Pepperidge Farm Herb Seasoned Dressing Mix can be substituted for crushed cereal)

I have used the dressing mix before and it's great!