Cream butter and sugar until fluffy. Now add vanilla essence to it. Also chop the cashews may be with 1 tbsp of flour so that it doesn't become a paste. Once done add it to the butter and sugar mixture.
Now add the flour to the mixture and give a good mix for a few seconds in the mixer. Don't over mix it. Turn the mixer off and scrape everything using your hands. The dough will be very soft at this time. Refrigerate it for 30-45mins. Once the dough is ready, take it out and let it sit for a few minutes.
When it gets a little soft, start making the balls and place it on the baking sheet. Sprinkle chopped cashew on each one of them. Press it with the light hand.
Preheat the oven at 350F or 180C. Bake them for 10-12 mins depending on the oven until the sides are golden brown. Check them at 10 mins so that they don't over bake. Take them out and let it sit for a couple of minutes before placing them on to the cooling rack.
Once they have completely cool down, store them in an air tight container. Enjoy them with your morning or evening tea. Should be good for 2-3 weeks.