Clean and wash the mushrooms and, depending on their size, leave them whole or halve them. Peel and chop the onions. Dab meat dry and cut in half crosswise. Mix cream, ajvar and 75 ml water and season with salt.
Heat 2 tablespoons of oil in a large frying pan. Fry the escalopes in it in portions on each side for 2-3 minutes, season with salt and pepper and remove. Fry the minced meat in the frying fat until crumbly, take it out.
Heat 1-2 tablespoons of oil in a frying pan. Brown the mushrooms and onions in it. Add minced meat and season everything with salt and pepper. Pour on the cream-ajvar mixture.
Put the cutlets in a greased casserole dish, spread the chopped meat mixture over them. Bake in a preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer) for approx. 1 1⁄2 hours. After approx. 45 minutes, roughly grate cheese over the top and continue baking.
Wash the parsley, shake dry, chop finely and sprinkle over the casserole. Serve with mashed potatoes and salad. Drink tip: dry red wine, for example a full-bodied Merlot.