First cut the plums into thick slices on an angle widthways and fan each one a little onto a non-stick oven tray. Dot them with the butter and sprinkle with the caster sugar and cinnamon powder. Bake for 10-15 minutes in the pre-heated oven until soft.
Lay two sheets of filo pastry on your work surface, brush them with melted butter and dust lightly with icing sugar. Put a second sheet of filo on top, brush generously with butter and dust with icing sugar. Cut the pastry in half widthways. Scrunch each sheet of filo pastry individually and place them on a baking tray. Bake in the preheated oven for 5 minutes until golden then remove and set aside.
In a small pan boil the water together with the sugar and cinnamon quill. Add the berries and simmer for 5 minutes, the texture should be like slightly liquid jam. Add the flaked almonds, turn off the heat and set aside.