In a bowl, add the butter (it's advisable to take it out a while before using it so it softens; I microwaved it for a few seconds because I was short on time, but it's better to use softened butter for shaping), the granulated sugar, and the brown sugar. Mix until combined and no butter remains visible.

After completing the previous step, sift the flour and knead until you get a dough. Finally, incorporate the chocolates into the mixture.

With the dough, form balls of about 1 3/4 ounces (50 grams) and decorate with chocolate chips on top. Freeze for about 2 hours. (I usually make them a day in advance, so I leave them overnight.)

After this time, preheat the air fryer to about 350°F (180°C); 3 minutes is enough. Cook the cookies at the same temperature for about 13-15 minutes, depending on how done you like them. If you want them to look perfectly round, 4 minutes before the time is up, open the air fryer and use a round cookie cutter or a glass if you don't have one, and gently shape each cookie until you get the desired form. Bake until the time is up.