Sift flour, baking soda and baking powder into a bowl. Set aside.
In another bowl, add in butter, egg, both sugars and vanilla extract. Mix until everything is well combined. Add in previously sifted flour mixture, ground hazelnuts, chopped hazelnuts and chopped chocolate. Use a wooden spoon to mix everything together until well combined.
Scoop around 1 ½ tablespoon of dough and form it into a round disk of ½ inch (1.3 cm) thickness. Place on a baking tray with baking sheet, with some distance apart. Continue until you finish with the rest of the dough. This recipe yields around 36 cookies.
Bake in a preheated oven at 340ºF (170ºC) for 15-20 minutes or until the bottom edges are golden brown and the cookies are fully cooked. Remove from the oven and cool on a rack. Enjoy!