The Cookie Dough:
1 cup (2 sticks / 225g) unsalted butter
1 cup (200g) dark brown sugar, packed
½ cup (100g) granulated sugar
2 large eggs + 1 extra egg yolk, at room temperature
1 tablespoon pure vanilla extract
2 ¾ cups (345g) all-purpose flour, spooned and leveled
1 teaspoon cornstarch
1 teaspoon baking soda
1 teaspoon fine sea salt
2 cups (340g) high-quality semi-sweet chocolate, chopped (or a mix of semi-sweet and dark)
Flaky sea salt for finishing
The Foolproof Step-by-Step Method
Step 1: Brown the Butter (The Flavor Foundation)
In a light-colored saucepan, melt the butter over medium heat. Continue cooking, swirling the pan occasionally, until the butter foams and then forms tiny golden-brown specks at the bottom, smelling nutty and fragrant (about 5-8 minutes).
Immediately pour the brown butter (including the specks) into a large heatproof bowl to stop the cooking. Let it cool for 15-20 minutes.
Step 2: Combine Wet Ingredients
Whisk the brown sugar and granulated sugar into the slightly cooled brown butter until the mixture is smooth and no sugar lumps remain.
Add the 2 whole eggs, the extra egg yolk, and the vanilla extract. Whisk vigorously for 30 seconds until the mixture is light and pale in color.
Step 3: Bring the Dough Together
In a separate bowl, whisk together the flour, cornstarch, baking soda, and salt.
Add the dry ingredients to the wet ingredients. Use a spatula to fold until just combined and a few streaks of flour remain.
Fold in the chopped chocolate. Do not overmix!
Step 4: The Crucial Chill
Cover the bowl with plastic wrap and chill the dough for at least 2 hours, or ideally up to 48 hours. This step is essential for flavor development and texture.
Step 5: Scoop and Bake
Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper.
Scoop the dough into large, 3-tablespoon-sized balls. Place them 3 inches apart on the baking sheets.
Bake for 11-13 minutes, or until the edges are set and golden but the centers still look soft and slightly underdone.
Pro-Tip: As soon as the cookies come out of the oven, tap the pan firmly on the counter to deflate them slightly, creating a perfect, wrinkled texture. Gently press a few extra chocolate chunks on top and sprinkle with flaky sea salt.
Step 6: The Final, Patient Step
Let the cookies cool on the baking sheet for at least 10 minutes. They will continue to cook and set during this time.
Transfer to a wire rack to cool completely… or enjoy warm with a glass of cold milk.
5 Pro Tips for Cookie Mastery
Weigh Your Flour: The most common baking mistake is too much flour. For accuracy, use a kitchen scale. If you don’t have one, fluff your flour with a spoon, spoon it into your measuring cup, and level it off.
The Cookie Dough Scoop: For perfectly uniform cookies that bake evenly, use a large cookie scoop (like an ice cream scoop).
Don’t Over-Bake: They are done when the edges are set but the center is still puffy and soft. They will firm up as they cool.
Bake One Sheet at a Time: For even baking, always bake in the center of the oven, one sheet at a time.
The Freezer Trick: You can freeze the scooped dough balls on a baking sheet, then transfer to a freezer bag. Bake straight from the freezer, adding 1-2 minutes to the bake time for fresh cookies anytime!
Troubleshooting Common Issues
My cookies are flat and spread too much: Your dough was likely not chilled long enough, or your baking soda is old.
My cookies are cakey and puffy: You may have used too much flour or overmixed the dough after adding the flour.
My cookies are too dark on the bottom: Your baking sheet is too dark or you baked on a lower rack. Use a light-colored pan and bake in the center of the oven.
Frequently Asked Questions (FAQ)
Q: Can I skip browning the butter?
A: You can use melted butter, but you will lose the deep, nutty, caramelized flavor that makes these cookies extraordinary.
Q: Why are my cookies dry?
A: This is usually caused by over-measuring the flour or over-baking.
Q: How do I get a thicker, chewier cookie?
A: The combination of extra brown sugar, the egg yolk, and cornstarch in this recipe is designed specifically for maximum chewiness. Chilling the dough is also crucial for thickness.
Q: How should I store these cookies?
A: Keep them in an airtight container at room temperature for up to 5 days. They also freeze beautifully for up to 3 months.
