Make sure the puff pastry is cold when you are working with it.
Dust the surface with all-purpose flour. Place the thawed puff pastry sheet and gently open it. Discard the butter paper. This way the thawed puff pastry wouldn't stick to the surface.
Make a slurry of 2 tablespoons of all-purpose flour with 4 tablespoons of water. Apply this slurry at the end of the puff pastry where you will finish rolling the puff pastry after adding the filling.
Transfer half of the prepared samosa filling, onto the puff pastry sheet. Spread it in a thin layer over the puff pastry sheet using your hands.
Now roll the puff pastry sheet into a log. Make sure to seal the end where you finish rolling properly.
Place the prepared log in the freezer, and let it chill while you work on the second puff pastry sheet.
Place both the prepared samosa puff pastry logs in the freezer for about 30 minutes. Meanwhile preheat the oven at 400F.
Take them out of the freezer. Cut the pinwheels about ½ inch thick using a serrated knife. Discard the ends of the puff pastry as they won't have any filling in them.
Repeat the same with the second puff pastry roll.
This recipe should yield you 25 samosa pinwheels.
Layer a baking sheet with parchment paper. My baking sheet is quite big, so I could bake them all at once. But you can bake these in 2 batches. If you are going to bake the samosa pinwheels in batches, make sure to keep the second batch in the freezer, while you bake the 1st batch.
Bake them at 400F for about 20 minutes or until golden brown and crispy. Serve them with cilantro mint chutney and masala chai.