Grease pork schnitzels with vegetable oil and fry on the grill or in a grill pan. Season with salt and pepper. Wrap the schnitzels in foil and place them in a warm place.
Chop the onion finely and fry in oil.
Peel the apple and grate it on a coarse grater. Cut the mushrooms into small cubes. Grind the nuts on a rotary grater.
Add mushrooms to the onion, season with salt and pepper, and fry for 5-7 minutes. Add apples and nuts and fry for 3 minutes.
Put the fried mixture on the prepared schnitzels. Pork schnitzel with mushrooms and apples is ready. Enjoy your meal!