Soak the cashew nuts in boiling water for 1 hour.
Drain it and process smoothly in a mixer by adding milk & then sugar.
Heat the butter in a large pan, put the cashew nut paste and cook over medium heat, stirring constantly until the mixture becomes thick.
Then, put vanilla essence and mix thoroughly.
Put this mixture in a greased tray and spread it evenly and press the silver leaf (optional) on the top. Let it cool for 45 minutes.
After it is cooled, cut into diamond shaped pieces.