Preheat oven to 400F/200C and line a medium baking sheet/tray.
Blend together the pumpkin puree, mascarpone, maple syrup and cinnamon.
Cut the pastry into strips about 1in/2.5cm thick. Spread some of the pumpkin mixture on each strip of pastry so there is a thin layer across the top. Dot the top of each strip with chocolate chips then carefully twist each strip so the pastry holds the filling inside it in a twist (see pics above).
Transfer the strips to the baking sheet/tray and brush the top with egg wash. Bake for approx 15 minutes until golden brown on top. Allow them to cool a couple minutes before serving so the pastry can firm up a bit.