Melt the jaggery in a pan, remove scum if any. Then cooking for 5 mins.
Meanwhile, roll out the chapati ball into a disc of 1 inch size or as you do your regular chapati.
Cut long strips of 1 inch size, these will be of small diamond cookies. Heat a pan with water, once it starts boiling, add these chapati cookies. Simmer and let it get cooked for 5 mins.
Mix the wheat flour in a bowl with water to get a lump less batter. Slowly add this to the boiling chapati rolls.
Then after 10 mins, add the jaggery water. Cover and cook again for 10 mins or till the chapati is well cooked. Add the cardamom powder and mix well.
Roast the nuts in ghee, pour over the payasam once it is cooked and serve hot.