In California, I grew up calling them casseroles (from my Nebraska born mom). I married a picky eater who refuses to eat "casseroles" - but loves my lasagna, and enchiladas (even if I just layer them) and a lot of crock pot stuff that isn't too far from.... But around my house we don't serve "casseroles". My DIL has thanked me many times for raising a son who will try anything and eat most of it.