Mix all ingredients together except for the grated cheese and butter and let the dough rest for 10 minutes. Use a spoon or piping bag to add dumplings to boiling salted water. Let the dumplings steep for 3 - 4 minutes.
Sprinkle the gnocchi with the cheese and flakes of butter as desired and gratinate in the preheated oven at 200 ° for 20 minutes, or serve in cream sauce.