Preheat oven to 375 degrees F. Line two baking sheets with parchment paper and set aside.
Place the softened butter and sugars in your mixing bowl. Using a stand mixer with the paddle attachment, or a hand mixer, cream the ingredients at low speed. Cream the ingredients until the mixture resembles a smooth paste.
Add the egg and vanilla extract and blend at low speed until combined.
In a separate bowl, whisk together the flour, baking soda, and salt. Add the flour to the butter mixture and mix until just combined.
Finally, stir in the chocolate chips until they are evenly distributed throughout the cookie dough.
Use a medium size cookie scoop to drop 2 tablespoon-sized dough balls onto parchment lined baking sheets. Place the cookie dough balls 2 inches apart (no more than 8 cookies per tray). Bake the cookies in a preheated oven for 10-12 minutes, or until the edges are firm and the centers are slightly underbaked.
Allow the cookies to cool for 5 minutes on the baking sheet before transferring to a wire rack to cool completely. Top the warm cookies with additional chocolate chips and serve!