12ounces semi-sweet chocolate chunks(I used Nestle Toll House)
1cupdark chocolate chips(I used Hershey’s)
Instructions
Add the flour, espresso powder, baking soda, baking powder, and kosher salt to a medium-sized mixing bowl. Whisk to combine.
Using a stand mixer or a medium-sized mixing bowl and handheld mixer on medium-high speed, beat the softened butter and sugars together for 1½ to 2 minutes until completely incorporated.
Add the whole egg, egg yolk, and vanilla. Continue mixing until no yellow streaks remain.
Add ½ of the flour and espresso mixture, and mix just until combined. Repeat for the remaining flour mixture.
Add the semi-sweet chocolate chunks and the dark chocolate chips. Mix just until incorporated. Cover and chill in the refrigerator for 30 minutes.
Preheat the oven to 350°F. Line 2 baking sheets with parchment paper.
Use a 1½-tablespoon cookie scoop to scoop the cookie dough. Space the cookies 2 inches apart. Bake for 10 to 12 minutes. Allow the cookies to rest on the baking sheet for 2 to 3 minutes before transferring them to a cooling rack.
Notes
Make sure your butter, eggs, and vanilla extract are at room temperature, as this will ensure better incorporation into the dough.
Chilling the dough helps solidify the fats and enhances the flavor and texture of the cookies.
Oven temperatures vary and may need to be recalibrated periodically to ensure they are accurate. Make sure to check your cookies at the lower end of the recommended baking time.