Green Bean Casserole

1/2 - 1 lb hamburger
1/4 c. diced onions
1 can green beans
1 can cream of mushroom soup
mashed potatoes, leftover or instant
cheddar cheese, grated

Brown hamburger with onion. Combine with green beans and mushroom soup and place in casserole dish. Spread mashed potatoes over meat mixture and sprinkle with cheese. The size of your family will determine how much potatoes and meat you should use. I usually do 1/2 pound of burger and approximately 3 c. of mashed potatoes.