Cream the room temperature butter and granulated sugar together then add the vanilla.
Gradually add the flour, continuing to blend.
Stir in the nuts by hand, cover the dough with plastic wrap and refrigerate for 20 minutes.
Line the baking sheets with parchment paper. Add the confectioners sugar to a small bowl and set aside.
Preheat the oven to 350 degrees.
Scoop into 1" balls (melon baller used) then roll in your hands so they balls are completely round.
Add the cookies to the parchment paper lined baking sheets and bake 10-12 minutes, without overbaking.
Transfer the cookies to a wire baking rack and let them cool 2 minutes.
While they’re still warm, gently roll the cookies in the (reserved) confectioners sugar and return them to the wire baking rack.
Let the cookies cool completely then roll again in confectioners sugar.