Green Bean Casserole Posted on January 2007 by Mike  Green Bean Casserole Mix 1 can cheddar cheese soup 1/3 cup milk 3 cans french style green beans 1 can french fried onions, save some to sprinkle on top the last 5 minutes of baking 1 1/2 qt. Casserole Bake at 350 20 – 25 minutes