Wash the chicken, pat dry and cut into strips. Heat oil in a pan. Fry the chicken filet in it from both sides until golden brown, season with salt and pepper and take it out. Drain mandarin oranges. Mix mayonnaise, mustard and curry. Spread the slices of toast on a baking tray.
Spread 1-2 tablespoons of curry mayonnaise on each slice. Cover with chicken strips and mandarins. Place a slice of cheese on each toast and gratinate under the preheated grill for about 3 minutes. Wash parsley, dab dry and cut into strips except for something to garnish. Arrange toast on plates and sprinkle with parsley strips