Peanut butter! :)

Nuts and seeds, and lots of beans. Some beans go really good with rice for a pretty good meal when you're starving.

These have a good shelf-life. Not apocalypse level shelf life, but it's a start.

Soup is good for a nice long while, too. Chicken noodle soup. Chicken with vegetables or whatever meat/vegetables you prefer. I'm sure there's a soup for whatever you desire. I hope you don't have a gluten allergy when it comes to soup. 😐