Preheat oven to 350 degrees F. In a large bowl, whisk together cream of mushroom soup, cheese and evaporated milk until smooth. Stir in bean sprouts, chicken, wild rice, celery, carrot, mushrooms and green onion. Spoon into a 2-quart casserole. Cover with foil and bake for 30 minutes.
Meanwhile, in a medium bowl, combine bread crumbs and dried parsley flakes; coat lightly with nonstick cooking spray. Toss gently; coat again with nonstick cooking spray. Sprinkle over the casserole. Bake, uncovered, for 20 to 25 minutes more or until filling is bubbly and topping is golden brown.