I recommend this, http://www.delo.si/druzba/odprta-kuhinja/torkov-namig-za-kosilo-matevz-in-kisla-repa.html .
Here's the wiki page: https://en.wikipedia.org/wiki/Matev%C5%BE .
It's a Slovenian dish and IMO tastes super good. However, We prepare it differently in my region of Notranjska (In-land if you will), It's still a side dish, just make sure to add more beans and pork rind when you cook it, it takes a lot better.
This is then added to what is basically Sauerkraut, but more in a soup kind of way. End product should look like this:
recipe: https://www.kulinarika.net/recepti/13415/enoloncnice/dva-v-enem/
If you're not into that then I recommend some beef soup http://okusno.je/recept/domaca-goveja-juha . This is also the one thing you will find on all Slovenian Sunday dinners. Soups are a big thing here
Sorry for all the links being in Slovenian, google translate the hell out of it. A few pointers, "sestavine" = ingredients , "priprava" = how to make.
https://en.wikipedia.org/wiki/Slovenian_cuisine Here's the whole list of foodstuffs, some are a bit harder to do or are seriously regionally based.
Dober tek!