Preheat oven to 400F (200C).
Spray a 13 x 9-inch baking dish with cooking spray and set aside.
Place frozen, raw chicken cutlets in bottom of prepared dish. Add the frozen green beans over the chicken, and cover with uncooked brown rice.
Whisk together chicken stock and condensed soup until combined. Pour in the dish.
Cover tightly with aluminum foil and bake for 1 hour, 20 minutes to 1 hour, 30 minutes (or until rice is tender and has absorbed most of the liquid).
Remove foil, sprinkle with cheddar and breadcrumbs. Place under the broiler (uncovered) for about 5 more minutes, or until cheese is melted and breadcrumbs are crispy.
