Ingredients
Method
Step-by-Step
- Whisk the flour, cocoa powder, instant espresso powder, baking soda, and fine salt together in a medium bowl.
- Beat the softened butter, granulated sugar, and packed light brown sugar for 2–3 minutes, until lighter in color and creamy.
- Beat in the eggs one at a time, then mix in the vanilla extract.
- Add the dry ingredients on low speed and mix just until combined. Do not overmix.
- Fold in the chocolate chips or chunks by hand.
- Cover the dough and refrigerate for at least 30 minutes. A 1-hour chill generally produces thicker, chewier cookies.
- Heat the oven to 350°F (175°C) and line baking sheets with parchment paper.
- Scoop roughly 2 tablespoons of dough per cookie and arrange the portions about 2 inches apart.
- Bake for 10–12 minutes, until the edges look set while the centers still appear slightly soft.
- Cool the cookies on the baking sheet for 5–10 minutes before transferring them to a rack. Sprinkle with flaky sea salt while warm, if desired.
Notes
Use instant espresso powder rather than brewed espresso because brewed coffee adds extra liquid. For the chewiest texture, chill the dough for 1 hour and remove the cookies from the oven while the centers still look slightly underbaked.
