Ingredients for 4 servings

  • 4 Parisian brioche rolls with topknots
  • 12 large fresh button mushrooms
  • 1 onion
  • 1 shallot
  • 1 garlic clove
  • parsley
  • 20 cl liquid crème fraîche
  • 50 g Comté cheese
  • 70 g Pyrenees cheese (with black rind)
  • salt and pepper