Rönttönen
A Rönttönen is a traditional sweet Finnish delicacy from the region of Kainuu. A small (about the size of the palm of a hand) open faced pie consisting of a crust made of barley or rye dough, filled with a sweetened mashed potato and berry (most often lingonberry) filling. Typically, it is served as an accompaniment to a coffee.
Source: Wikipedia
