Knead flour, curd, egg, egg yolk, salt and sugar to a dough.
Form a roll.
Replace apricot seed with lump sugar or marzipan. (optional)
Cut dough in equal pieces (big enough to fit an apricot) and put the apricot in and form to a dumpling. (to avoid sticking flour hands)
Put dumplings in salted (pinch) boiling water and simmer for about 15 min.
In the meantime prepare cinnamon breadcrumbs mix.
Melt butter in a pan, add breadcrumbs, cinnamon and sugar (amount depends on taste) and roast slightly. Don´t forget to stir constantly, mix burns easily.
Roll dumplings in cinnamon breadcrumbs mix.