Preheat the oven to 350°F (180°C). Line two baking sheets with parchment paper.
In a medium-sized bowl, whisk together the flour, baking soda, cornstarch,and salt. Set aside.
In a large bowl, mix together the eggs with oil, both sugars and vanilla extract.
Gradually incorporate flour mixture and fold in chocolate chips.
Using an ice cream scoop, take equal portions of dough and place on the prepared baking sheets, 1 inch (2.5 cm) apart.
Bake for 8 -10 minutes until slightly golden on the edges. Let the cookies cool on the baking sheets until the cookies are firm enough to remove, probably another 5 minutes. While cookies are still warm add some extra chocolate chips on top. Cool completely on a wire rack. Enjoy!