Take rava and maida equally.
Add chopped onions, green chilies, cumin seeds and salt.
Add ghee or vegetable shortening and make a thick batter (like chapatti dough)
Take a plastic sheet and take a small quantity of dough.
Place the dough on the sheet and spread it like thin vadai .
You can put a hole in the middle.
Heat oil and fry till they become crispy.
Serve hot.