Buy 99 cent dehydrated mashed potatoes, macaroni and cheese, nice ramen, oatmeal and so on. Empty each serving into its own ziplock bag, press the air out and seal.
You now have something which turns into what resembles food with the addition of boiling water. I assume you have a canister stove w/pot.
These are good for eating out of, since they turn inside out for easy washing:
http://www.amazon.com/Guyot-Designs-Squishy-Bowl-Cup/dp/B002YMHCXKWith this, you can source water from the environment instead of carrying it with you:
http://www.amazon.com/Sawyer-Products-SP128-Filtration-System/dp/B00FA2RLX2/Just as good as boiling, removes everything but heavy metals and never needs new cartridges.
tl;dr the only food you should be carrying is dehydrated, there's ways to pack it down so it takes up the minimum possible space, and whatever you can use from your environment is something you don't need to carry.
