Whisk together the flour, cocoa powder, baking soda and salt, then set the dry mixture aside.
Beat the softened butter with the granulated sugar and brown sugar on medium speed until creamy, about 2–3 minutes.
Beat in the eggs one at a time, then mix in the vanilla extract.
Add the dry ingredients and mix into the butter mixture. Fold in the chocolate chips.
Cover the dough with plastic wrap and refrigerate for at least 3 hours or overnight. Do not skip chilling.
Preheat the oven to 350°F (180°C) and line a baking tray with parchment paper. Scoop about 2 tablespoons of dough for each cookie and roll into balls.
Roll each ball first in granulated sugar, then in confectioners’ sugar. Arrange on the lined tray with space between the cookies.
Bake for 11–12 minutes in the preheated oven.
Video
Notes
Chill the dough for at least 3 hours or overnight before baking. The complete total is left unset because chilling time varies; the preparation value is the existing estimate.