I know what you're talking about with the green bean soup. I do believe it's something like:
3 lb green beans, 1 in. pieces
3 lb potatos, 1 in. pieces
Large onion (or 2, I like onion) also chopped
1/2 lb bacon, chopped up
1 stick butter
1 can of condensed milk, or a cup or so of cream
I think that's everything. Well,
salt/pepper to taste, and maybe toss in some garlic? It's been a while, I'd have to call my mom to double check for sure.
Toss everything but the milk or cream into a pot of boiling water, and allow to cook until the potatoes are cooked
through. If you're good at guestimating, the water level will be just barely enough to cook everything (really is better to underguess and have to add more if you're getting dry partway through), add in the can of condensed milk, and keep over heat just long enugh to get the milk warm and distributed.
You don't have to use the bacon, or the butter, but at least one or the other is a good thing.
There's another version my mother in law does that is 'healthier' (no milk/cream, lower butter, light on the bacon) but it's not as yummy.
There's also one that involves stewed tomatoes, and that? AMAZING but I don't know how to do it.