01 - Preheat the oven to 350°F and line a baking sheet with parchment paper.
02 - Whisk together the flour, cocoa powder, baking soda, and salt in a medium bowl.
03 - Beat the butter with granulated and brown sugars until the mixture is light and fluffy.
04 - Add the egg and vanilla extract to the creamed mixture and mix until fully blended.
05 - Gradually add the dry ingredients to the wet ingredients, stirring gently until just combined.
06 - Fold the chocolate chips into the dough evenly.
07 - Drop dough by spoonfuls onto the prepared baking sheet, spacing about 2 inches apart.
08 - Bake for 18 to 20 minutes until the edges are set and slightly crisp.
09 - Allow to cool completely, then break into crumbles. Serve alone or as a topping for desserts.