Most weekends I cook a stew, a soup and a lasagne or similar to freeze and eat over the weekend.
So there ends up being portioned stews soups and lasagnes, pasta bakes, quiches, in there so he can grab them out and take them. (Or so I can use them when I cant be bothered cooking now that it is me and DD by ourselves for 2 weeks at a time lol)
Curried sausages and Devilled sausages are easy and cheap to do too so are always favs here.
Also tuna pie or pasta bakes when the big cans are on sale