Preheat the oven to 375°F and line baking sheets with parchment paper or silpat mats.
Whisk together flour, baking soda, cornstarch and salt in a medium-sized bowl.
In a separate bowl cream the butter, sugar and the brown sugar using an electric mixer until combined. Add the eggs and the vanilla and mix on medium speed until batter is smooth.
Add in the flour mixture on low speed until combined. Add in chocolate chips and stir with wooden spoon until it is mixed into the dough.
Scoop large tablespoons of dough and drop onto baking sheets about 2 inches apart. Shape dough into round circles and press down gently on the dough so that the cookies spread more when baking.
Bake for about 8-10 minutes. Remove cookies from try and let them cool on wire racks.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.