Wash the schnitzel, dab dry and tap flat. Place 1 slice of ham on each cutlet. Sprinkle with pepper and thyme. Roll up into roulades and stick together with chopsticks. Heat the oil.
Brown the roulades in it all around. Peel and finely chop the onion. Add to the roulades and fry briefly. Deglaze with 400 ml water. Cover and cook over high heat for 10 minutes.
Meanwhile peel and wash the carrots and cut them in half lengthwise. Cook in boiling salted water with a pinch of sugar for about 10 minutes. Stir mustard and cream into the roulade sauce. Add the sauce thickener and bring to the boil briefly.
Season to taste with salt and pepper. Wash the chives, cut into small rolls and stir in. Serve everything sprinkled with parsley leaves. Boiled potatoes taste good with it.