Maybe I am some kind of freak, but I always just make something up using whatever ingredients I have on hand. I don't keep condensed soup stocked in my cabinets. Not that I have anything against it; I just never eat it or use it, so it never occurs to me to buy any. I always just make soups and whatnot from scratch, since it doesn't really take that long anyway. e.g. cream of mushroom soup you can just use sour cream, creme fraiche, heavy cream, or milk, and I usually have at least one of those. I do usually have a couple cans of tomato paste, and some canned beans, though, and we have unlimited supplies of Japanese curry mix because my wife always buys a ton of it when it's on sale for dirt cheap.
Speaking of mushrooms and cream, though, I do enjoy making beef stroganoff, and that is a pretty quick and easy dish to make. Some mushrooms, onion, garlic, and beef and heat that up with sour cream with appropriate spicing. I usually dump in some wine or beer, too. Heat up some egg noodles to go with it, and I like halving and pan-frying brussels sprouts for a veggie with it. Brussels sprouts are so tasty when you carmelize them a bit in the pan, and it only takes a few minutes to make them.
