For the sauce, wash the cherry tomatoes. Peel 1 onion and garlic, dice finely. Heat 2 tablespoons of oil in a saucepan. Fry the onion and garlic for about 2 minutes until transparent. Add the tinned tomatoes and juice and chop a little with a spatula.
Pour the whiskey. Bring everything to the boil, cover and simmer over medium heat for about 10 minutes. After about 5 minutes add cherry tomatoes. Season with salt, pepper and oregano.
For the meatballs peel 1 onion, dice very finely. Put it together with minced meat, breadcrumbs, egg and mustard in a large bowl. Season well with 1-2 tsp salt and pepper. Knead the minced meat mix well with your hands or with the dough hooks of the mixer.
Season again with salt and pepper. With moistened hands form approx. 12 balls from the minced meat mixture. Heat 4 tablespoons of oil in a frying pan. Fry the balls for 3-5 minutes while turning.
Cook the pasta in 2-3 l salted water according to the instructions on the packet. Preheat oven (electric cooker: 200 °C/circulating air: 180 °C/gas: see manufacturer). Grate cheese finely. Grease casserole dish. Drain the pasta in a sieve, drain briefly.
Then place in the mould together with the sauce and meatballs. Sprinkle with cheese. Bake the casserole in a hot oven for about 20 minutes. Take out. Serve immediately. Serve immediately. A crisp salad goes well with it.