Flush hearts and cut off vessels and excess fat. In a deep frying pan, heat the vegetable oil, fry the hearts, salt and pepper over high heat, then reduce heat and simmer for 15 minutes over low heat in your own juice.
Peel and finely chop the onion, add to the hearts and simmer for another 15 minutes.
Add the garlic, grated cheese, sour cream and skimmed sour cream into the pan, add starch, salt and spices to taste. Stew until the cheese has melted.
At the end, add chopped greens, bring the sauce to a boil, cover and remove from heat.
Serve with the sauce.
Chicken hearts in cheese sauce turn out to be very tender and tasty, cooking them is very simple and quite fast, this dish is great for any side dish, especially for mashed potatoes. To give the dish a spicy taste and aroma, add your favorite spices, if necessary, add a little water during cooking, but not too much so that the sauce is not too thin. If you want to cut the hearts in half or into four parts then it will be more convenient to serve.