1. Preheat the oven to 200 °C.
2. Daub the fi lo pastry with the melted butter, then cut it in four.
3. Place the four pieces of pastry harmoniously in the square dish so they form a basket-shape. In the centre, place the banana cut in thick slices. Sprinkle the coconut, cinnamon and vanilla sugar on top.
4. Put in the oven for 20 minutes. Serve straight away.