Preheat your oven to 375F with a rack in the center.
In a stand mixer, with a whisk attachment, combine the butter, sugar and brown sugar.
1 ½ cups unsalted butter, 1 ½ cups brown sugar, ¾ cup granulated sugar
Mix on medium-low for 2 minutes until pale in color and fluffy.
Add the eggs one at a time and the vanilla extract. Mix for another 2 minutes.
2 eggs, 1 tablespoon pure vanilla extract
In a separate bowl combine the flour, salt, baking soda and baking powder. Whisk them together until combined.
4 ⅓ cups all purpose flour, 1 teaspoon salt, 1 teaspoon baking powder, 1.5 teaspoons baking soda
Add the flour mixture to the creamed butter and sugar mixture in 2 or 3 increments until it forms a soft dough.
Mix only until combined, for about 1 minute. Scrape the sides of the bowl and make sure all the ingredients are well incorporated.
Use a rubber spatula to fold in the chocolate chips.
Use a large cookie or ice cream scoop to divide the dough into 12 equal size balls.
Place 6 dough balls in a baking tray. I prefer to use light colored trays (silver).
Bake for 12 minutes or until lightly golden brown on top.
Remove from the oven and leave the cookies on the tray to cool down for 20 minutes.
Bake the second batch of 6 six cookies for 12 minutes and allow them to cool down on the tray for 20 minutes.