01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - Whisk together flour, cocoa powder, baking soda, and salt in a medium bowl. Set aside.
03 - In a large bowl, beat butter, granulated sugar, and brown sugar until light and fluffy, about 2 minutes.
04 - Add eggs one at a time, mixing well after each addition. Stir in vanilla extract and espresso mixture until fully combined.
05 - Gradually add the dry mixture to the wet ingredients, stirring just until incorporated.
06 - Gently fold chocolate chips into the batter until evenly distributed.
07 - Drop tablespoon-sized portions of dough onto prepared baking sheets, spaced 2 inches apart.
08 - Bake for 9 to 11 minutes until edges are set but centers remain soft.
09 - Allow cookies to cool on baking sheets for 5 minutes before transferring to a wire rack to cool completely.