I make most of the food up before we go and freeze in ziplocks or vacuum pack. We usually do spaghetti, stew, chili. Then I'll make up rice like rice o roni and freeze and then grill chicken or pork chops or steaks. Meals take about 10 mins max to warm up and/or grill.
We do the same about a month before hunting season make large meals , save about a 3 person portion,
vacuum pack frozen left overs. Then have a pot big enough to bring frozen food to a boil shut heat off and about 20 minutes its ready. A small cooler will hold a dozen meals, and no smell or mess in bear country.
