Chinese Hotdish

Preheat the oven to 350 degrees F (175 degrees C).

Heat a large skillet over medium-high heat. Add beef, onions, and celery. Cook and stir until beef is browned and crumbly, 5 to 7 minutes. Mix in cream soups, water, instant rice, water chestnuts, soy sauce, salt, and pepper. Pour into the prepared casserole dish.

Bake in the preheated oven for 1 hour. Add bean sprouts and stir. Sprinkle on enough chow mein noodles to cover the top of the dish and continue baking until heated through, about 30 minutes more.