Preheat the oven to 350 degrees. Line a baking sheet with a silpat mat or parchment paper.
Using a hand mixer, beat together the butter, white sugar, and brown sugar until creamy. Add the vanilla and one egg at a time until creamy and smooth.
Combine the flour, cocoa powder, baking soda, and salt, then mix thoroughly.
Slowly add the flour mixture to the butter mixture until just combined.
Add the chocolate chips and gently stir until evenly mixed.
Drop a heaping spoonful of the cookie dough on the baking sheet, two inches apart.
Bake the cookies for 9-10 minutes.
Cool on baking trays, then move to a wire cooling rack to finish cooling. Enjoy.