Bring the milk to the boil, add the desiccated coconut, sugar and the crushed poppy seeds, let bubble through briefly, then remove from the stove and let the mixture cool down.
Place a puff pastry on the worktop, spread the poppy seed porridge on it with a large knife or a palette, place the second puff pastry on top and press down a little. Now brush everything with the syrup of hot water and vanilla sugar and cut into small squares, preferably 2 x 2 cm, so they are with a bite in your mouth (puff pastry crumbles a lot).
Place on a baking sheet lined with baking paper and bake in a preheated oven at 180 ° C for about 15 minutes until golden brown.