Canned Green beans either French cut or regular cut, Campbell's (no subs) cream of mushroom or cream of celery soup, and since they ran Durkees out of business I now use the Good Value Onion Rings in a bag from Walmart. They are yummy. This is basically the original recipe and we call it the Ohio State Casserole.
Fresh green beans, boiled until tender in chicken broth (no insipid, bland canned beans here). 2 cans of cream of mushroom soup. 1 soup can of milk Half the onions mixed in Top with grated sharp white cheddar and the remaining onions.
I saw a holiday green bean recipe the other day that looked interesting. Literally raw fresh green beans that you smashed a little with a rolling pin and served with some kind of fancy citrus vinaigrette, I think? I'll try and find it. I love raw green beans for snacking!