""Chinese-style ingredients like almonds, water chestnuts, mushrooms, celery and chow mein noodles combine with a creamy broth, soup and milk mixture - and chicken, of course - to form this casserole. The name comes from the fact that people who have it seem to be pleasantly surprised and wonder what is in it. This is a good recipe for potlucks, etc., as it can be prepared ahead of time and refrigerated or frozen until ready to bake."..."