Oh there's so many similar to this one with žlikrofi. It's usually centered around a local dish or some food item, then there's foid stalls with all kinds of local stuff being sold, sometimes rhere's a competition who makes the best dish...
I'll list a few. Usually these events are not big, but really nice, chill events with good food. Probably my favourite is the cherry festival because I adore fresh cherries just from the tree, and other fruit you can get in Goriška brda region.
Two events, one weekend. Which one to visit? We say: why not both? Read about the 53rd edition of The Cherry Festival in Brda and 13th International Wild Flower Festival in Bohinj.
www.slovenia.info
My second favourite would be all the little seaside festivals (in Izola for example) where they sell fresh sea food, olive oil, etc.
Chocolate festival
Bogračfest (meat dish) at Vinarium festival
Štrukljifest
Odkrijte slovensko tradicionalno jed na festivalu štrukljifest! Privoščite si različne štruklje obiščite naše dogodke in spoznajte kulinarično dediščino.
strukljifest.si
A few more listed here
Learn about the diversity of Slovenian gastronomy at culinary festivals and events held in every season of the year.
www.slovenia.info