Preheat the oven - 180C
Wash, peel and cut 4 apples in small pieces.
Place the apple pieces in a pan and add the sugar and the water.
Let it cook over medium heat mixing occasionally.
When the apples are reduced to jam, remove from the heat. Do not worry if you still have some whole pieces.
Roll the puff pastry into a tart pan (with or without removable bottom) and prickle it with a fork to prevent it from swelling.
Spread the apple jam over the pastry.
Wash, peel and cut the remaining apples in thin half-moon slices.
Place them on top of the jam making circles around the pan ending in the center.
Sprinkle sugar and cinnamon on top of the apples to help it to caramelize.
Bake for 30 mins. Serve still warm with a scoop of vanilla ice-cream.