There are a couple of canned meals that I always carry in my trailer. I keep them not only because they are easy but also because they are always ready and keep without refrigeration; thus, they are there for emergency bug-outs or if you want or need to stay a day longer at camp than you had originally planned. They are also handy when you get to camp, tired from the drive, and it's dinner time. Probably no surprise, both are gluten and dairy-free.
One is a can of Dinty Moore
Stew, which I combine with a drained can of green beans and a half teaspoon of basil. The basil is optional; but, it really takes away the ready-made "can" taste. Just heat and eat. It lasts me for one meal because my dog and I share this (in separate bowls).
The other heat and eat meal, chili, requires opening three cans, and adding cooked meat is optional. I find that I don't need nor miss the meat in this one. You need a can of Mexican-style tomatoes, a can of either black beans or kidney beans, drained, rinsed, and drained again, and a can of pinquitos or
a can of seasoned chili beans, including the sauce that comes with them in the can. Add whatever seasonings you want, chili powder, cumin, hot sauce, salsa, etc and serve with corn chips or corn tortillas on the side. I sometimes mix in part of a jar (about 6 to 8 oz) of LaVictoria
Salsa Verde. If you don't want to be bothered with the corn chips or tortillas; or, if you are storing the chili for an emergency meal, add in a drained can of corn to the chili when you're mixing and heating everything together on the stove. (The corn, mixed with the beans or the corn chips or tortillas eaten as a side to the chili makes a complete protein so you don't need meat.) Of course, you can purchased ready made canned chili; but, I don't think it's quite as good tasting. (No, my dog doesn't get to share this one; so, it makes enough for two meals.)
Of course, I prefer fresh food; but, at times, canned has its advantages.