Transfer the mixture to a greased plate, butter paper, or greased parchment paper.
When the mixture cools down slightly, i.e., after 2 or 3 minutes grease your hands and knead it. ( If you cannot handle the hot mixture, then grease another parchment paper, put it on top of barfi mixture, and knead it)
Within 3 to 4 minutes the mixture will become smooth and start to look dry. This means you are ready to set the barfis. Don’t over knead as this will release fat from cashews.
Now cover the kneaded mixture with parchment paper or butter paper and gently roll it using a rolling pin to a rectangle or oval shape of around ¼ inch thickness.
I have added edible silver foil or vark to make it look pretty and festive. This is completely optional. It will not add any taste or flavor.
Cool completely and cut them into diamond shapes, squares, or rectangles. To obtain diamond-shaped katlis – first cut them diagonally spacing 2 inches between each line. Then cut straight spacing two inches depending on the size desired between each line.