Wash the potatoes and cook in boiling water for 15 to 20 minutes. Quench cold, peel and slice. In the meantime cut bacon into strips. Wash and clean spring onions and tomatoes and cut into small pieces.
Wash, clean and halve the mushrooms. Leave the bacon in a pan until crispy, set aside. Press the sausage meat in the skin, form into dumplings and fry in the bacon fat while turning until golden brown. Add spring onions and fry for three minutes.
Season with salt and pepper and remove. Heat the oil in the frying pan. Fry the potatoes and mushrooms for ten minutes while turning. Add meatballs, spring onions and tomatoes and cook for another five minutes.
Season with salt and pepper. Wash thyme, dab dry, pluck leaves from the stalks and chop finely. Serve in a vegetable pan sprinkled with crème fraîche and chopped thyme.