Preheat oven to 375°F (190°C). Line baking sheets with parchment paper.
In a medium bowl, whisk together flour, baking soda, and salt. Set aside.
In a large bowl, beat butter until creamy (1 minute).
Add both sugars and cream together until light and fluffy (3-4 minutes). Scrape sides of the bowl.
Add eggs one at a time, beating 30 seconds after each addition.
Mix in vanilla extract and espresso powder until smooth.
Gradually add dry ingredients in thirds, mixing until just combined. Do not overmix.
Fold in chocolate chips and any additional mix-ins.
Scoop dough into 2-tablespoon portions and place 2 inches apart on prepared baking sheets.
Bake for 11-13 minutes, rotating the pan halfway, until edges are golden.
Let cookies cool on the pan for 5 minutes, then transfer to a cooling rack.
Enjoy warm or store in an airtight container for later.