Nana Johnson’s Green Beans

1 small onion
1/3 Green Pepper-chopped
1/2 Square butter
3 cans french cut green beans
1 can sliced water chestnuts
1 T Flour
1 C Milk
Cheddar cheese

Directions:
Sauté onion, green pepper, and water chestnuts with butter and a pinch of salt. Stir in flour. Gradually add milk and cook until starts to thicken. Add the beans and some cheese. Pour into casserole dish and top with more cheese. Bake at 350 F for about 20 minutes.