The canned-soup-with-stuff casserole in general became an American classic in the early part of the twentieth century, thanks to the recipes created and publicized by the Campbell Soup Company. In 1955 Campbell hit the jackpot—creating the most popular casserole of all time, the classic Green Bean Bake, made with Campbell's cream of mushroom soup and topped with fried onions from a can. Things don't become classics because they're bad—and the combination of ingredients in this dish is really quite delicious. That's not to say that a tweak or two can't improve it. Try the following version with fresh-fried shallots and dried tarragon thrown into the mix. It's irresistible! This version respects the fifties taste but is so much brighter and more layered in flavor. The soy sauce, by the way, was part of the original recipe.