Once hot add grated carrot and saute for 2-3 minutes or till the carrot starts to soften.
Now add milk and let it come to a boil.
Simmer on low-medium heat till all the milk evaporates. Do stir in between so milk does not stick to the bottom and sides of the pan.
Now add khoya, mix and let it melt completely.
Then add sugar, cardamom powder and continue cooking till all the liquid dries out and becomes thick halwa consistency again. This time you need to stir it more frequently.
Lastly mix in chopped almond, cashews and raisins.