Clean, wash and slice the zucchini. Peel and chop the onion. Chop the tomatoes coarsely.
Heat the fat in the pan. Fry the gnocchi for about 8 minutes while turning, season with salt and nutmeg. Remove and heat the oil in the pan. Fry the minced meat until crumbly. Add zucchini and onion, fry briefly and season with salt and pepper. Wash oregano, shake dry and chop the leaves coarsely.
Don't rush things. So that a nice crust and roasting substances are formed when roasting, less (stirring) is often more. Therefore, before turning the entire contents of the pan over, first check a minced crumb to see if it has the desired browning.
Add cheese in small pieces and milk and bring to the boil. Warm the gnocchi, oregano and tomatoes in the sauce. Season to taste with salt and pepper.