Wash and clean pumpkin,remove seeds and peel the pumpkin skin.Cut pumpkin into small cubes.
Using Mortar Pestle ,dehusk the cardamom and powder the seeds ,keep it aside.
In a pressure cooker add water, place pumpkin in a pressure cooker separator/container, sprinkle 1 tablespoon of water and pressure cook for 2-3 whistles.
Once pressure releases on its own,remove the container and mash pumpkin well with the help of masher or else you can blend to get puree
Take a Thick Bottom Kadai ,heat 3 tablespoon of ghee,add mashed /puree pumpkin
Mix well and cook ,till all water in the pumpkin dries up.
Add sugar, mix well and continue to cook till pumpkin leaves edges (halwa consistency)
Add ½ tablespoon ghee,chopped dry nuts mix well.
Turn off the heat ,add cardamom powder and serve hot or warm .