Welcome to Flyertalk! I'm impressed that you made your account in 2015 but this is your first post!
Flyertalk tends to be more of a fancy hotel crowd than a backpacking crowd, but based on my limited hiking experience, I think that a "meal" while backpacking often consists of a group of snacks (ideally healthy) rather than an entree. One thing you can look into is meals ready to eat (MRE) which the military uses. They are sold on eBay, and although I've never tried them, they seem to meet your requirements.