Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Peel, wash and cut carrots into thick slices. Wash potatoes thoroughly and cut into slices with the skin on. Mix carrots, potatoes, oil, 1 teaspoon salt and a little pepper in a bowl.
Pour into a large flat casserole dish or onto a baking tray. Bake in a hot oven for 30-35 minutes, turning from time to time.
Meanwhile, for the mustard cream, wash the parsley, shake dry, pluck off the leaves and chop finely. Mix with sour cream and both types of mustard. Season with salt, pepper and 1 tsp. sugar.
Wash the chops and pat them dry. Heat clarified butter in a large pan. Fry the chops in it in 2 portions over high heat for 1-2 minutes on each side. Season with salt and pepper.
Remove the potato and carrot mixture from the oven with the tray and turn up the oven temperature (electric cooker: 250 °C/circulating air: 225 °C/gas: see manufacturer). Place the chops on the vegetables and spread the mustard cream on the chops.
Cook in a hot oven for about 10 minutes.