I don't work at the moment, but I do have class from 6pm - 10pm 4 nights a week.
DH pretty much takes care of everything in the evenings. We usually keep dinners simple since he's got enough to juggle with DD, getting things ready for the next morning, et.
Definitely not the healthiest of meals - so much processed crap that can be tossed in the oven, cooked on the george forman, or popped in the microwave.
We've been so lucky that MIL sometimes sends over some home cooked meals once or twice a week. Over the weekend I try to make a few things that we can have as left overs for a few days.
I've had good intentions of trying to put meals together for DH that he just has to heat up or cook (without having to throw it together), but it's been too hard to do that at this point.
Maybe do a lot of crock pot meals? You can put them on in the morning or before work (depending on cooking time) so it's cooking all day and all he has to do is turn it off and serve. I, myself, would like to get more crock pot recipes for this same reason.