Cook green beans and cool. Drain beans, bean sprouts and chestnuts very well. Mix ... sprout mixture, 1/2 can of cream of mushroom soup ... to oven to heat.
Saute onion in butter until transparent. Drain beans, bean sprouts, and water chestnuts. Mix ... for 35 minutes. Can be made a day ahead, ... slice the water chestnuts.)
Thaw green beans; layer half of the beans, bean sprouts, chestnuts, mushrooms and green ... Cover with one can of the mushroom soup and ... until bubbly. Serves 10.