Soak cashew nuts in warm water for one hour. After one hour, break a cashew and check if it has become soft from inside. If they have become soft, then remove water from the cashews and grind them very finely, in a grinder.
Mix grinded sugar in the cashew nuts paste.
Place a frying pan on the burner on low flame, and cook the paste of cashews and sugar. After sometime this mixture will become thick. Now turn off the burner. Mix the grinded cardamom in it and let the paste cool for 10 to 15 minutes.
After the mixture has cooled off, roll it like a thin bread, and spread it in an oily plate or tray. Now cut this sweet into your preferred size pieces.
This all time favorite Cashew Nuts Katli is now ready to serve and eat. It can be stored in a refrigerator for up to 10 days.