2 (28 oz.) cans cut green beans
1 (16 oz.) sour cream
2 cans cream of mushroom soup
1 (6 oz.) can French's fried onions

Mix sour cream and cream of mushroom soup together. Add green beans. Stir all together and put in a 9 x 13 casserole dish.

Bake at 350°F for 35 to 40 minutes. Take out and add the fried onions to top. Put back in oven to brown the onions.