Now, a good, old-fashioned reuben sandwich is just about always our top pick if were going to a deli or diner, but when the weather gets a bit colder and were looking for something to warm us up a bit more, what better way to do that than to turn our favorite sandwich into a soup Which brings us to this creamy reuben soup. Having turned a lot of our favorite dishes into soups (cheeseburger soup, cabbage roll casserole soup, etc. ) we can say that this one takes the cake its so, ridiculously good.