01 - Preheat oven to 350°F. Line a baking sheet with parchment paper.
02 - In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt until evenly blended.
03 - In a large bowl, use an electric mixer or whisk to cream the softened butter with granulated and brown sugars until light and fluffy.
04 - Beat in the egg and vanilla extract until fully combined.
05 - Gradually add the dry ingredient mixture to the wet ingredients, stirring gently until just combined.
06 - Fold the semisweet chocolate chips into the dough evenly.
07 - Drop the dough by spoonfuls in irregular small clumps approximately 2 inches apart onto the prepared baking sheet.
08 - Bake for 18 to 20 minutes until the edges are slightly crisp and the centers are just set.
09 - Allow the bake to cool completely on the sheet, then break into crumbles. Serve alone or as a topping.