Wash the potatoes thoroughly in cold water. Place each potato one after the other on a tablespoon and cut crosswise close together with a knife. Place in an ovenproof dish and bake in a preheated oven (electric oven: 175 °C/ gas: level 2) for 20 minutes.
Meanwhile, wash the dill and dab dry. Grate cheese. Mix crème fraîche and cream, season with salt and pepper. Pour over the potatoes and cover with plucked dill. Sprinkle everything with cheese and bake for 40 minutes until golden brown.