Casserole Suggestions Needed

At the school where I work we have all be taking turns cooking for a family who is having Difficulties. I signed up to do this in a couple weeks. (The restrictions: no liver, no goat cheese, nothing raw.)

From helping coordinate the food I noticed that they have gotten lots of lasagne, so if I can I'd rather make something else. I have chicken in the freezer, so a tasty idea that would let me use that would be good, too.

So, any ideas? Thank you in advance!