2 cans green beans (any style)
1 can cream of mushroom soup
1 sm. can sliced mushrooms
1 c. liquid from beans
1/2 c. mild cheddar cheese, grated
1/4 c. bacon bits
1 can French fried onion rings
1 can slivered water chestnuts, if desired

Drain beans. Place in long casserole dish. In small saucepan, heat mushroom soup, liquid from beans and cheese, stirring until cheese melts. Sprinkle drained mushrooms and bacon bits over beans. Cover with cheese sauce. Cook in 350 degree oven for 30 minutes. Crush onion rings and sprinkle on top. Heat in oven for 5 minutes.