it would be best to place a baking tray lined with baking paper, put the puff pastry dough on top, cover it with another baking paper and place another baking tray on top. This way, when baking ...

Seal the edge. Repeat with the remaining pastry and filling, then transfer to a tray join-side down, brush all over with the beaten egg and refrigerate, covered, for 30 minutes. Preheat the oven ...