1) Preheat your oven to 350 degrees F. Line baking sheets with parchment paper.
2) In the bowl of an electric mixer fitted with the paddle attachment beat the butter until smooth. Add the sugars and beat until light and fluffy, about 2 minutes. Scrape down the sides of the bowl.
3) Add the eggs one at time and mix until well incorporated. Scrape down the sides of the bowl. Add the vanilla and mix for about 30 seconds.
4) With the mixer on low speed, add the flour, baking soda, baking powder and salt. Mix until combined.
5) Stir in the chocolate chips.
6) Scoop 2-inch balls of dough onto the cookie sheet. Bake for 12 minutes. The cookies are done when the edges are slightly golden brown. The top may look a little soft. That's ok! The cookies will continue to bake a little while they cool.