Pressure cook the potatoes for 2-3 whistles. Take out in a bowl and mash them very well.
Heat oil in a pan. Add the cumin seeds and let it crackle. Add onion and green chillies and saute till onion turns soft.
Add the masala powders, salt, coriander leaves and mix. Add mashed potatoes and mix altogether well.
In a mixing bowl add the flour, salt and ghee. Mix and crumble nicely using your fingers.
Add water little at a time and Knead the dough nicely for about 5-10 mins. Keep aside covered with a cloth for sometime.
Knead the dough again and make medium size balls.
Take the ball and roll it to a circle of 4-5 inches in diameter. Place a tbsp of the potato stuffing in the center keeping about 2 inches space in the sides.
Take the edges and plead them and bring the pleads in the center.
Join the pleads together very well and press down. Now roll it with a rolling pin to the same size of chapatti /roti.
Heat the tawa. When the tawa is heated place the Paratha and cook in medium high heat till it is partly cooked about 2-3 mins.
Flip and cook the other side for about 2 mins. Drizzle some ghee on the top and flip.
Now again drizzle some ghee and cook for a mins or two and remove from heat.