In chopper,add walnuts and coarsely chop them & set aside.
In pot,add ghee and let it melt,add chopped walnuts,mix well and cook on low flame for 10-12 minutes.
Add khoa,mix well and cook for 5-6 minutes.
Add milk and mix well.
Add sugar and cardamom powder,mix well and cook until sugar is dissolved.
Cover and cook on low flame for 3-4 minutes until oil separates then mix well until it leaves the sides of the pot.
Garnish with walnuts & serve.