Begin by preheating your oven to 350 degrees Fahrenheit. This ensures that your cookies bake evenly and achieve that perfect texture.
In a large mixing bowl, combine butter, dark brown sugar, and granulated sugar. Using a handheld or stand mixer, cream these ingredients together on medium speed for about three minutes. You’ll want the mixture to be light and fluffy, indicating that the butter is well creamed.
Add in the eggs and vanilla to the creamed mixture. Mix on low speed until just combined. This helps to ensure that the mixture remains light without over-mixing.
In a separate bowl, whisk together the all-purpose flour, unsweetened cocoa powder, baking powder, baking soda, espresso powder, and salt. This step is essential as it ensures that all your dry ingredients are evenly distributed.
Gradually add the dry mixture to the wet ingredients. Mix on low speed until just combined. Be careful not to overwork the dough, as this can lead to tougher cookies.
Now, fold in the Andes mints and chocolate chips using a spatula or wooden spoon. This adds those delightful minty and chocolatey bits throughout your dough.
Cover the dough with plastic wrap and chill it in the refrigerator for about one hour. This step is crucial as it helps the flavors meld and makes the dough easier to handle.
Once chilled, line a baking sheet with parchment paper. Scoop out about two tablespoons of dough and place them on the prepared baking sheet, leaving space between each cookie as they will spread while baking.
Bake in the preheated oven for 15 to 17 minutes. The edges should appear set, while the centers may look slightly underbaked. This will lead to a chewy texture.
After baking, remove the cookies from the oven and let them cool on the baking sheet for about five minutes. Then transfer them to a wire rack to cool completely. This cooling period is essential for achieving the perfect texture.