Bakery-Style Classic Chocolate Chip Cookies

Steps

1. 1.

   Mix Dry Ingredients

   In a medium bowl, whisk together the all-purpose flour, cornstarch, baking soda, and fine sea salt until evenly combined. Set aside.

2. 2.

   Combine Wet Ingredients

   In a large mixing bowl, whisk the melted butter, dark brown sugar, and granulated sugar together until smooth and fully blended with no sugar lumps remaining.

3. 3.

   Add Egg and Vanilla

   Whisk in the egg, egg yolk, and vanilla extract until the mixture becomes pale, slightly thickened, and smooth.

4. 4.

   Form Dough and Add Chocolate

   Pour the dry ingredients into the wet mixture and fold gently with a rubber spatula just until combined. Gently fold in 200 grams of chocolate chunks, taking care not to overmix.

5. 5.

   Scoop and Chill

   Line a large baking sheet with parchment paper. Scoop 3-tablespoon balls of dough onto the sheet. Press a few reserved chocolate chunks onto the top of each ball. Cover tightly with plastic wrap and chill in the refrigerator for at least 1 hour.

6. 6.

   Bake

   Preheat the oven to 350°F (175°C). Space chilled dough balls 2 to 3 inches apart on parchment-lined baking sheets. Bake for 11 to 13 minutes, until the edges are light golden brown and the centers still look slightly soft.

7. 7.

   Cool and Finish

   Remove from the oven and sprinkle lightly with flaky sea salt if desired. Let the cookies sit on the baking sheet for 10 minutes to set, then transfer them to a wire rack to cool completely.