Steps

• Place the sifted flour on a work surface, add the diced butter, and rub the flour and butter between your hands to coat the flour.
  Add the sugar and a pinch of salt, continuing to work with your hands.
  Finally, pour in the egg yolks and mix everything quickly.
  Shape into a dough, wrap in plastic wrap, and refrigerate for at least half an hour before using.
  
  After resting, roll out to a thickness of 0.2 inches on a slightly floured work surface.
  Cut two discs for each cookie with a 2.4-inch diameter cutter.
  For half of the cookies, cut out a ring using a smaller cutter.
  Place cookies on a baking sheet lined with parchment paper.
  Bake in a preheated static oven at 350°F for 15 minutes.
  Remove from the oven and let cool.
  Fill with jam or hazelnut cream and sprinkle with powdered sugar