Could you compromise and do him fresh vegetables? Plated up microwave stuff is pretty depressing, but just the main bit done like that with fresh veg or rice or pasta or whatever is fine.
My dp was always late in when mine were little, and I always used to wait and eat with him- I was usually desperate for a bit of adult conversation by then. .i'd sit and have a cup of tea with the children.
I think often the hassle of cooking is the peeling and slicing and preparing. DH goes out twice a week while I do bath time and is home around 9, starving. On those nights I'll cook whatever I'm having but prepare enough for two - so prepare veg for two but only cook for one etc. Then when he gets in he just cooks his food that's all prepared. Takes a bit longer than nuking it, but it's much nicer.
Or of course, stews, curries, casseroles etc are all nice reheated. Or good quality salads, just leave dressing off until he gets in.
Dh has always just microwaved his dinner, regardless of what it is and I have always eaten with the dcs. When he gets home is just needs food, rather than fuss....and we both want an adult eating with the dcs, eating proper food. Given the choice I'd rather eat with dh and have some peace, so we both make sacrifices - I'm just not cooking twice!
We do the same as snow. DH often can't wait and grabs a sandwich or sushi to eat on the train anyway. He would rather have something light like soup in the evening, so I usually have a couple of Covent Garden packets and/or tins in for him.