French meat

Delicious recipe without mayonnaise. Save it so you don't lose it
Ingredients:
Pork (ribeye) — 600 g
Mushrooms — 400 g
Onion — 2 pcs.
Vegetable oil — 2 tbsp.
Sour cream (20%) — 1 cup
Cheese — 200 g
Egg — 1 pc.
Salt — to taste
Pepper — to taste

Preparation:

1. Cut the meat into steaks 1 cm thick, pound with a mallet, season with salt and pepper.
2. Slice the mushrooms into thin slices and sauté in vegetable oil until soft and the liquid evaporates.
3. Slice the onion into half-rings and sauté separately in vegetable oil until golden brown, seasoning to taste.
4. Place the meat in a baking dish, then layer the mushrooms and onions on top.
5. For the sauce, mix the sour cream with half of the grated cheese, the egg, salt, and pepper.
6. Spread the mixture over the onions. Cover the dish with foil and place it in the oven for 30 minutes at 180 °C. Remove the foil, sprinkle the remaining grated cheese on top, and bake without foil at 180 °C for about 10 minutes. Ready!