Mash the riped banana’s with hand so as to form a rough paste.
Take a pan add 2 tsp of butter to it and allow it to melt.Then add the banana paste to it and fry till it turns slighty brown.
Then add jaggery to it and keep mixing properly when all the jaggery is properly incorporated ,add milk and water to it and simmer and allow it to cook for 5 mins
Take 1 tsp of butter in a bowl and add1 tsp each of scliced almounds,cashews and raisins to it and roast it in microwave.
Now add the saffron to the payasam and bring to a boil.then add cardammom powder and butter roasted dry fruits to it and mix properly and bring to aboil and allow it to enhance the flavour by increasing the heat and cooking for another 4 mins.
Serve hot or cold as kheer as per your likings.