Casseroles are what you want for the long shelf life plan. Most are ground meat and canned/frozen vegetables/soup. Most also freeze well, so you could pre make and reheat them when you want them, especially if you don’t want to spend a week eating the same casserole. You can get a bit more variety than just pasta and sauce or Mac and cheese this way.

Most every ingredient in bread (cake, cookies, pancakes, etc) can be stored long term if you want to just make bread when you need it, but that is a lot of effort.