Cook the tortellini according to the instructions on the packet. Dice the onion and garlic cloves and sauté with a little butter. Mix the cream, sour cream and sour cream with a little tomato paste and ketchup and season with salt and pepper. Dice ham and mushrooms and fold into the sauce. The sautéed onions with the garlic too. Layer the pasta, sauce and cheese alternately in a baking dish. Last layer of sauce and thick cheese. Gratinated: 200 ° C, approx. 30-40 minutes. It is a bit powerful but delicious. Have fun cooking.