This is what we Romanians call “pancakes” (clătite). In the US for example, these are not “pancakes”. What Americans call “pancakes”, we call “clătite americane” (American pancakes) or just “pancakes” (the untranslated English word).
~The pancakes in the photos were made by me~
Naleśnik in Polish. Etymology is unclear but certainly slavic. Most current hypothesis claims it’s from “na liściu” meaning something baked on a leaf.
We eat them with various jams, Nutella, anything sweet, sweetened cottage cheese or quark or curd or whatever a “twaróg” would translate to is a popular filling too.