Green bean casserole has always been one of my favorites on Thanksgiving. Fun fact – it was also the topic of my informative speech during public speaking class in college – how to make a green bean casserole – ha! But once I started getting funny about cream of whatever soups (trying to avoid MSG), I thought my relationship with green bean casserole was over. Until I found Alton Brown’s Best Ever Green Bean Casserole, that is. What I love most about his recipe is the homemade cream of mushroom sauce that makes the casserole. I’ve made this several times, first exactly as he wrote it, then I tweaked it…