Sounds very much like one of them "desert island scenarios" as part of some coursework I did years back (of a personal development course). Didn't think this would reflect for reality.
These are some great tips, and I'm sorry you went through that but thankfully times are better for you! If I'm ever down on my luck, I just might have to try some of these recipes.
Azriel Delacroix shared these on Discord, and I think they fit into this thread, so I'm re-posting them here .
These are 'cream burgers - where you add sour cream and milk to your beef in order to get more burgers out of it (so you can make burgers for roughly $0.35 each):
Admittedly, it's not especially appetising, so it's probably something I'd only do if I was on a very tight budget. However, it's nice to know that exists, for people who do find themselves in that situation !