Preheat your oven to 400 degrees.
Coat muffin tins with non-stick cooking spray/oil.
Boiled the potatoes until they are soft and let cool.
Peel and smash the potatoes.
To the smashed potatoes add coriander, jeera, red chili powder and chat masala.
Add onion and spinach to this mixture. Mix well.
Fold the pastry sheet from top to bottom, bringing together the two opposite ends.
Again Fold them from side to side, bringing together the two opposite ends.
Now place folded pastry on coated muffin tin cups and Fill with 1 or 2 tablespoon of the potato filling. You can fill all the way up to the top.
Repeat with the other sheet of puff pastry.
Add 1 or 2 tablespoon of mozzarella cheese on top of fillings.
Bake for about twenty minutes or until a pastry turns golden brown.
Take out from the oven and serve hot with sauce or mint chutney.