>>19795039we have it with cabbage too, called zelnik. also with leek (prazenik), or pumpkin, tikvenik, etc. many different kinds. in serbia they make it with minced meat i believe, called borek.
the origin of all these dishes, if something like this can be said to have an origin is probably byzantine greek, or ottoman.
something else that's fairly common here and not as common abroad is meatball soup