Overnight salmon casserole

2 cups dry stuffing mix (I use Pepperidge Farm Herb Seasoned)1 large can salmon (or 1/2 pint if you can your own)1/4 cup chopped onion1/2 cup diced celery1/4 cup chopped green pepper1/4 cup mayonnaise (not Miracle Whip)2 eggs, slightly beaten1 cup milk1/2 cup shredded Cheddar cheeseButter a 2 1/2-quart casserole dish. Put 1 cup of stuffing in dish. Mix together next 7 ingredients. Place in dish on top of stuffing. Top with remaining stuffing. Refrigerate overnight. When ready to bake top with Cheddar cheese. Bake at 350 degrees F for 1 hour.