01 -
Preheat your oven to 375° F (190° C) and position the rack in the middle of the oven.
02 -
Line a cookie sheet (half-sheet pan) with parchment paper.
03 -
Beat the softened butter until light and fluffy, about 1 minute. Add both sugars and continue beating until creamed and smooth, 3-5 minutes, scraping down the sides of the bowl halfway through.
04 -
Add eggs one at a time, mixing on medium speed for 1 minute per egg. Mix in the vanilla and scrape the sides of the bowl to fully incorporate the ingredients.
05 -
In a medium bowl, whisk together the flour, baking soda, corn starch, and salt until well combined.
06 -
With the mixer on low, gradually add the dry ingredients to the wet ingredients. Mix just until combined and no visible streaks of flour remain. Do not overmix.
07 -
Add the chocolate chips and fold them in by hand or use the lowest mixer setting.
08 -
Scoop ⅓ cup of cookie dough (4.2 ounces/117 grams) and divide the dough ball in half. Turn the jagged side of the top half facing up and place on the bottom half. Arrange dough balls 2-3 inches apart on the baking sheets.
09 -
If the dough is very soft, chill in the refrigerator for 10-20 minutes before baking.
10 -
Bake for 10-12 minutes until the edges are golden and the centers are slightly firm. Leave cookies to cool on the pan for 10 minutes before transferring to a wire rack.
11 -
Store cookies in an airtight container at room temperature for up to 3 days or freeze for up to 3 months. To freeze dough balls, flash freeze for 1 hour before transferring to an airtight container.