1 cup (226 grams) unsalted butter, at room temperature, cut into 1 tablespoon slices
2½ cups (320 grams) all-purpose flour
1 teaspoon baking soda
½ teaspoon salt
¾ cup (220 grams) light brown sugar
½ cup (50 grams) granulated sugar
1 large egg plus 1 egg yolk, at room temperature
1 tablespoon vanilla extract
12 ounce dark or milk chocolate bar, chopped into 1/2" to 1/4" pieces based on preference (or 12 ounces chocolate chips)
Instructions
Brown the butter by placing room temperature butter slices evenly in a cold skillet. Heat the skillet over medium heat, stirring occasionally until the butter foams and turns brown. Immediately pour the browned butter into a heat-proof bowl. Let cool slightly, then add 2 tablespoons of water, whisk, and place it in the refrigerator for 8 hours or overnight. Alternatively, you can place it in an ice bath and whisk until the butter solidifies and reaches 65°F.
Place the chilled browned butter (65°F) in a mixing bowl fitted with a paddle attachment. Cream the butter and sugar together on medium-high speed for 3-5 minutes until it becomes light and fluffy. Remember to scrape the sides of the bowl after each minute. Add the room temperature egg and egg yolk, mix until well combined.
In a separate bowl, whisk together the all-purpose flour, baking soda, and salt.
Gradually add the flour mixture to the butter mixture, incorporating it at low speed until just combined.
Scoop or roll the cookie dough into 1-inch balls and place them on a baking tray lined with parchment paper. Refrigerate the dough for 30 minutes.
Preheat the oven to 375°F and place the baking rack in the middle position.
Bake the cookies for 8-10 minutes or until they have golden brown edges. Let cool on rack for a minute and then transfer to cooling rack. Enjoy!