Cut the meat into small pieces and fry in vegetable oil until golden brown.
Cut the onion into half rings, mushrooms into slices.
Fry the onion with mushrooms in butter for about 10 minutes.
Peel and boil the potatoes in salted water. Cool and cut into slices.
Put the potatoes in the pots, and on top the meat, season a little and grease with mayonnaise.
Then the next layer of mushrooms with onions.
Sprinkle everything with grated cheese, cover the pots with a lid and bake at 180 degrees for 20 minutes.
The meat in the potato pot is ready, serve warm.