Peel and chop the onions. Drain gherkins and dice. Wash parsley, shake dry and chop. Wash chops and pat dry. Heat the oil in a pan and fry 2 chops one after the other, turning them briefly on each side.
Season chops with salt and pepper and place them in a large ovenproof dish with lid. Add minced meat to the hot frying fat and stir-fry gently. Finally add 2/3 of the onions and fry briefly.
Stir in the cucumber cubes and parsley and deglaze with stock and cream. Stir in mustard and let everything simmer for about 1 minute. Season minced cucumber cream with salt and pepper and spread over the chops.
Cover and cook in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 1 3/4 -2 hours. Braise for the last 15-20 minutes without lid. In the meantime, wash the potatoes and cook covered in plenty of boiling water for about 20 minutes.
Drain the potatoes, rinse under cold water and peel the skin. Cut the potatoes into slices. Heat the fat in a large pan and fry the potatoes until golden brown, turning them over. Finally, add the remaining onion cubes and fry.
Season the fried potatoes with salt and pepper and serve with the braised chops. Garnish with parsley if desired.