You do know they sell tuna foil packs in flavors? I prefer the Spicy and Sweet and Lemon Pepper flavors for tuna based trail meals.
I lot of my trail (cooked) meals were based on ramen and Knorr noodle or rice packs. A typical might be a homemade combo of a half brick of ramen, with a spoon full of flavored instant potatos. This all in one ziplock. Just add appropriate water to hydrate in a cozied ziplock. Same with other dry soup mixes. One might be Minestrone soup mix in a lunch portion with a squirt of olive oil. Just rehydrate and drink. You can get creative with just $10 worth of larger packs intended for kitchen use. Just divide up, mix and match and calculate water per portion.
A first evening meal might be frozen meat and a spud. Preseasoned and frozen. Keep it in a cooler in the car on the drive to the trail head. It will thaw on the first leg out from the parking area tp your first night camp. That could be strips of steak on a kabob spit and a foil wrapped spud. Frozen link sausage has so many preservatives that it was good to roast on on open fire the next morning and downed with an egg boiled in a small tin can or pot. They make small, light hard cases for eggs that could give you a hard boiled egg every morning for a few days. Frozen meats can be carried in little homemade Reflectix bag to slow the thaw. Chicken meat rots faster than any other meat, so I always avoided it using the freezing method. Canned or foil packs are good to go.
I used to use a lot of Spam foil packs, but about five years ago I ate some strips of spam on skewer on a hike and it made me sick for some reason. It was not bad. I think I'd eaten so much Spam in 40 years that my body developed a revulsion for it.
I preferred those stripped and roasted on kabob skewers like the steak strips.
I always liked to carry those mini, one serving packs of tea, hot chocolate, fruit punch and instant coffee. Dry gatorade too. Those are real nice for a break when you've been drinking plain water all day. I always preferred the stuff with real sugar. You need it and the electrolytes, IMO.
Of course carry regular "trail" type snacks like power bars, nuts, trail mix and jerky. Those can be real pickmeups on breaks after breakfast has left you.
You can buy the Mountain House/Packet Gormet stuff, but it gets costly and I preferred rolling my own. I'd brew up some homemade meal concoctions to try way before they got used in the woods. Even cook it on the kitchen stove top using my alcohol or butane stoves.