Dumplings filled with plum jam or fresh plum, which are sprinkled with cinnamon and sugar. The dumplings made of potatoes, flour, egg, and salt. Cook a few dumplings at a time in salted water for about 10 minutes. After cooking put them in toasted bread crumbs and finally sprinkle with icing sugar. The result will be yummy.
I thought that plum dumpling is an authentic Hungarian food, but I googled it and found the Italian, and Croatian versions, too.