Step 1

In a medium bowl, whisk the flour, cornstarch, baking soda, and salt. Set aside.

Step 2

In a large bowl or stand mixer, whisk the butter, brown sugar, and granulated sugar until well combined. Add the egg yolks and vanilla and whisk until smooth.

Step 3

Gradually add the dry ingredients, mixing on low speed or by hand until about halfway combined. Add 1 cup of chocolate chips and mix gently just until no streaks of flour are visible.

Step 4

Cover and chill the cookie dough for 2-3 hours.

Step 5

Preheat the oven to 350°F and line baking sheets with parchment paper or silicone baking mats.

Step 6

Portion the cookie dough into 2-tablespoon-sized balls. Press half a caramel into the center, pressing the dough around it to seal it inside. Repeat with the remaining dough.

Step 7

Arrange the cookie dough balls on the baking sheets, leaving 2 inches between them. Press a few extra chocolate chips on top of each ball. Optional: cut the remaining caramels in half and press those on top, too.

Step 8

Flatten the cookies slightly with your palm and bake for 10-12 minutes, or until the edges are lightly golden and the centers are just set. While the cookies are still hot, sprinkle with flaky sea salt.

Step 9

Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely. Enjoy!