Put the dumpling bread in a bowl. Beat the 2 eggs in a coffee mug, stir. Pour in the milk (if you use a normal coffee mug, you no longer have to measure the milk). Tip the milk and egg mixture over the bread and stir.
Finely chop the onion, sauté in a saucepan with a little olive oil. Wash and cut the parsley. Add the parsley and onion to the dumpling bread and knead everything through. Season with salt and pepper and add the flour, mix the dumpling bread well.
Form dumplings from the mass (this works best if you keep your hands under cold water). Then cook the dumplings in salted water for about 15 minutes.