breakfast instant oatmeal. Put the servings in a plastic ziplock plastic bag before you leave. then just add water and eat out of the bagie, then put any other trash you have in the bag and seal up. nothing to clean and an instant trsh bag for small things that won't leak all in you food bag.
lunch, Power bars and trail mix. I am fishing or hiking and don't want to stop to fix a meal. put the wrapers in the breakfast ziplock baggies.
Dinner, any thing I can just a water to. Prepared meals are great but expensive. tuna helper is good, remove from package and put in ziplock freezer bag, if you don't eat it all put left over in bag to carry out. instant soups are good and cheap. Ramie (spelling?) noodles are good and also cheap.