String Bean Casserole - cooking recipe

Ingredients

2 cans French-style green beans
1 can mushroom soup
1 can French fried onions
1/2 c. grated cheese
1 large onion
1/2 stick butter

Preparation

Chop onion and saute in butter.
Add other ingredients in casserole dish.
Put cheese on top.
Bake at 375\u00b0 for 20 minutes. Put French fried onions on top of dish and cook 5 minutes longer.