Preheat oven to 350F/180C. Place parchment paper on a baking pan.

In a bowl add the butter, beat until fluffy and light in color.

Add the sugar, vanilla, and beat until well combined.

Sift together cocoa powder, flour, and cornstarch add it to the previous mixture, mix well.

Cover and place the dough in the fridge for one hour.

Make 16 balls from the dough, roll the balls between your palms but try to form the balls quickly to prevent it from melting in your hands.

Press the balls down gently using a fork. Bake for 11 minutes on the middle rack.

Let the cookies cool while in the baking pan since it’s fragile when hot and will break if touched.

After 5 minutes place the cookies on cooling rack to cool completely.

Roll the cookies in confectioners’ sugar.

Try not to chew these cookies, place the cookie in your mouth and let it melt.