400grams(2 ¼ cups) chocolate chipssemisweet or dark
Extra chocolate chips for topping
Flaky sea saltfor finishing
Instructions
Cream the butter, brown sugar, and white sugar together until light and fluffy.
Add the egg and mix until incorporated, then add the yolk and mix until incorporated.
Add the vanilla and mix again until smooth.
In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.
Add the dry ingredients to the wet ingredients and mix until no dry flour remains. Do not overmix.
Gently fold in the chocolate chips using a spatula.
Portion the dough using a large cookie scoop or weigh about 100 grams per cookie.
Shape into rough, tall mounds rather than smooth balls.
Cover well to prevent drying and chill in the refrigerator for at least 3 hours.
Preheat the oven to 365°F (185°C). Line a baking sheet with parchment paper and arrange cookies, leaving at least 3 inches (8 cm) of space between them.
Top each dough mound with extra chocolate chips.
Bake for 12 to 14 minutes, until edges are lightly golden.
Remove from the oven and, while the cookies are still hot, use a 4-inch round cookie cutter to gently swirl around each cookie, tucking in any uneven edges to form a clean, round shape. The gentle motion helps shape them into perfectly round bakery-style cookies.
Sprinkle with flaky salt, and let the cookies cool on the baking sheet before transferring them to a wire rack to finish setting.