Wash and clean the spinach and shake dry. Peel and chop the onions and garlic. Heat the oil in a pan. Fry the minced meat for about 10 minutes while turning it. After about 5 minutes add half of the onions and garlic. Season with salt, pepper, sugar and oregano. Add the tomatoes and chop coarsely with a spatula
Melt the butter and fry the remaining onion in it until transparent. Add the spinach and let it collapse in a closed pot. Season to taste with salt, pepper and nutmeg. Put the spinach in a sieve and squeeze it out. Put spinach back into the pot and stir in cream cheese
Prepare the pasta in boiling salted water according to the instructions on the packet. Coarsely grate and mix Parmesan and Mozzarella. Drain the pasta, drain well and fill with spinach
Spread the sauce in a flat casserole dish. Place the pasta side by side in the sauce and sprinkle with cheese. Bake in a preheated oven (electric cooker: 225 °C/ convection oven: 200 °C/ gas: level 4) for approx. 15 minutes