Wash the meat and dab dry. Heat the oil in a small pan, fry the meat thoroughly all around, then fry on each side at medium heat for another 5 minutes. Season with salt and pepper.
In the meantime, wash the salad and shake dry. Peel onion and cut or slice finely. Mix crème légère, mustard, salt, pepper and curry. Wash, clean and slice the tomato.
Cut open the buns. Cut open chicken filet. Cover the bottom half of the roll with lettuce leaf, onion, tomato, chicken filet and curry cream. Place the upper half of the roll on top and sprinkle with curry.