In a mixing bowl add in powdered sugar and soft unsalted butter. Beat together until it is creamy and both get mixed. Now add in Vanilla essence and beat once again. Next, add in the flour mixture.
With a spatula get mix till everything comes together as a soft dough.
Next take the pistachios with the help of a kitchen knife chop them into rough pieces. Along with the pistachios roughly sprinkle sugar and do once more round of chopping. Divide the dough into 4 equal-sized balls and then roll them into the shape of the logs.
Now cuts the logs into small finger-sized logs and then roll them into the chopped sugar and pistachio mix and then set it in a baking tray lined with parchment paper.
Repeat the same process for all the logs and arrange everything in a baking tray and keep in a refrigerator till we preheat the oven. Preheat the oven at 180 Deg C for about 10 mins and then bake them at 180 Deg for 15-17 mins or until the bottom of the cookies become brown. Cool down completely and store in a clean airtight container.
Notes
Baking time may vary from oven to oven so keep a check after 12 mins.