I like home cook'in. In the winter, I dehydrate various hamburger helper meals/chili..., seasoned the way I like them, vacuum seal them and toss them into the freezer so they're ready to go whenever I need them. I stick the food in a freezer bag left unsealed and then then the vacuum bag sealed around that. Dehydrated food takes longer to re-hydrate than freeze-dried. When preparing tonight's dinner, I add some water to tomorrows dinner in the freezer bag and zip it up and it's perfect when I need it the next day. Instant oatmeal for breakfast along with a fist full of dehydrated blueberries. I pack P-n-J along with trail mix and some apples for lunch which is heavy but I like it. You can dehydrate fruit rolls for snacks as well. You can get all the calories you want from your own cooking with your own dehydrated meals.
Experiment in advance. Some food don't re-hydrate well like corn and eggs.