Line 2 baking sheets with parchment paper or silicone baking mats. Set aside.
In the bowl of an electric mixer, combine the butter and sugars. Beat together on medium speed until light and fluffy, about 2 minutes. Blend in the egg, and vanilla. Scrape down the bowl if needed.
In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt. Slowly add the dry ingredients into the wet ingredients in the mixer on low speed just until incorporated. Fold in the chocolate chips.
Either chill all the dough in the fridge for at least an hour then roll into balls or you can roll dough into balls first then chill. Roll 2 tablespoons of dough into balls. Break off a little less than half off of the top, flatten out the bottom and in the middle add 2 of the candy melts, on top of each other with the flat sides touching, then cover with top part of the cookie dough and roll into a ball making sure you can't see the candy melts.
When ready to bake, preheat the oven to 350˚ F.
Place the cookie dough balls on the baking sheets. Top each cookie dough ball with a little more chocolate chips.
Bake 8-9 minutes. Let cool on the baking sheets for about 5 minutes, then transfer to a wire rack to cool completely