Peel garlic and onion, dice finely. Wash and clean the zucchini and cut into small cubes. Wash and halve the tomatoes. Heat the oil in a large pan and fry the minced meat until crumbly.
Add onion, garlic, zucchini and oregano and fry for 2-3 minutes. Season with salt and pepper. Add tomato paste and sauté briefly while turning. Deglaze with 250 ml water and simmer for 5 minutes.
Cook the pasta in boiling salted water according to the instructions on the packet. Mix tomatoes into the minced sauce, season again. Drain the pasta and let it drain. Whisk the parmesan, cream and egg yolk.
Season with pepper, salt and nutmeg. Put the noodles in a greased casserole dish, spread the minced sauce on top. Pour egg cream over it. In the preheated oven
Garnish with oregano.