Peel and finely dice the onion and garlic. Fry onion, garlic and minced meat in 2 tablespoons of hot oil until crispy. Season with salt, pepper and paprika. Chop the tomatoes in the tin and add to the minced meat. Bring to the boil once.
Season if necessary. Clean, wash and chop the vegetables. One after the other, fry them briefly in the remaining oil. Season with salt, pepper and marjoram. Put the minced meat and vegetables into an ovenproof dish, sprinkle with cheese and bake in a preheated oven (electric range: 200 °C/ gas: level 3) for 15-20 minutes