I had this response all typed out but got distracted by little ones and never hit post- and now I see that the poster above me has said something similar- but here's my response anyway.

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I have a similar situation; my husband doesn't come home til after the kids (4 and 2) are asleep. For a long time I basically fed the kids, which meant putting plates of food down for them while I cleaned the kitchen etc., at dinner time. But then I started getting frustrated with DS's eating habits, did some research on mdc and found info on Ellyn Satter, a nutritionist who's written several books. I really like her approach. It involves meals and snacks at set times, with a "division of responsibility" which means parent is responsible for what's served and when, and kid is responsible for what to eat from what's served and how much. You set out serving dishes of healthy food, including bread, and let them select what to eat. It's worked great for us as a family and really takes the pressure off- no more badgering anyone to eat their veggies. If DS eats only bread one meal because he doesn't want to eat the stew or whatever else I served, that's fine, and I don't bug him about it, but neither do I make him something else. He can fill up more at the next meal or snack.
ANYWAY, a big part of her message is the importance of the family meal, which made me sad at first because we really only eat together on the weekends. But I decided that we needed to start having family meals as a family of three, without DH, on weekdays. It's hard sometimes but I sit with them- and eat with them- for every meal. Sometimes at dinner I only eat a token amount so that I can eat with DH later when he gets home. And a nice side effect is that I'm less hungry during the bedtime routine and find I have more patience. I've noticed some positive changes in how my kids eat- they are more relaxed about it, they've been slowly trying new things, and they're getting a better balance of foods now that they don't graze all day.
That said, I'm a big believer in doing what works for your fam, and if you'd rather keep doing what you're doing, and maybe eat more formally when DH is there sometimes, rock on.