Anything you can eat one-handed

Casseroles, spag bol sauce, that sort of thing. We've gotten lots of those Uncle Ben's precooked rice packets to go with lots of the frozen meals.
I've also found lunch can be the most difficult meal once you're home by yourself with bubs so a good idea would be a couple of batches of muffins or similar that you can freeze individually then take them out one at a time.