Do Czechs cook casseroles? Or is this just an American thing? If so, what is put in Czech casseroles? I think about this whenever I take a small piece of cabbage, small piece of dumpling and small piece of pork and combine on fork. I thought those combos would make a good casserole. The unspoken rule for American casseroles is that it needs meat, at least one veggie, starch, dairy and/or cheese.