1/8 c. butter
1 c. chopped onions
1 (4 oz.) can mushrooms (save liquid, add water to make 1/2 c.)
1 can sliced water chestnuts

SAUCE:

4 tbsp. butter
1/3 c. flour
1/2 tsp. salt
1 tsp. soy sauce
1/8 tsp. Tabasco sauce
1 c. milk
Saved mushroom liquid
2 cans French cut string beans
American cheese slices

Cook the first 7 ingredients until thick. Spray a 9 x 13 inch glass baking dish. Put a layer of sauce over the bottom. Put 1 can of drained beans over sauce. Sprinkle 1/2 of the onions and mushrooms over beans. Repeat. Cover top with slices of American cheese. Bake at 350 degrees for 45 minutes.