Chicken fillet thins with a knife and lightly hammered with a wooden mallet. Taste. Mix olives, parmesan and the walnuts. Fillet spread in pan (may be in pieces but not overlap) is distributed filling. Wound on a roll and secured with pegs. Pour a broken sauce. Sprinkle with walnuts, grated cheese and bits of butter. Bake 25-30 minutes at 200 C. Serve sliced ​​and sprinkled with sauce from baking.