Preheat oven to 375°F. Cover cookie sheet with parchment paper and set aside.
In the bowl of a stand mixer fitted with the paddle attachment, mix butter, sugar, brown sugar and ground espresso until fluffy (about 2 minutes).
Add eggs one at a time, mixing well after each addition. Add vanilla and mix.
In a separate bowl, combine flour, baking soda and salt.
Add flour mixture to the butter mixture and mix until fully combined, scraping the bowl at least once.
Using a wooden spoon, mix in the chocolate chips/chunks.
Scoop dough and place on parchment lined baking sheet. Bake for 8-10 minutes until just done. Remember, the dough is dark, so the color doesn't change much when they're done. Don't overbake!