Clean and wash the cauliflower. Cook in boiling salted water for about 15 minutes. Peel, wash and slice the potatoes. Clean, wash and slice mushrooms and tümats.
Fry the mushrooms and potato wedges one after the other in hot oil until golden brown. Heat the fat in a pot and sauté the flour in it. Gradually deglaze with broth while stirring. Bring sauce to the boil and simmer for 5 minutes.
Stir in crème fraiche and cheese. Add curry. Season with salt and pepper. Put cauliflower, potatoes, mushrooms and tomatoes in a greased casserole dish. Pour sauce over it. Bake in a preheated oven (electric: 200 °C/ gas: level 3) for 15-20 minutes.
Sprinkle cauliflower with curry and garnish with parsley leaves.