Knead the dumpling dough with polenta and sour cream with the dough hooks of the mixer. Season with salt, pepper and nutmeg. Form dough into dumplings.
Heat the butter in a large frying pan bit by bit. Fry the dumplings in it in portions all around until golden brown and crispy and take them out.
In the meantime, wash the parsley, shake dry and pluck the leaves. After the dumplings, briefly add the parsley to the hot frying fat, then spread over the dumplings. Serve.