
Browning the butter first is the one move that separates this cookie from a standard chocolate chip cookie. Cooking it past melted and into deep amber territory concentrates the milk solids into something toasty and almost butterscotch-like, and that flavor carries through every bite once the dough goes into the oven. Combined with a generous amount of roughly chopped bittersweet chocolate and a long rest in the fridge, this Brown Butter Chocolate Chunk Cookies recipe reads like the grown-up version of the cookie you grew up with, crisp at the edges, chewy in the middle, and never one-note sweet. Part of our recipe collection.
Melt the butter over medium heat and keep stirring once it starts to foam. The color will move quickly from pale yellow to gold to a deep amber, and the smell will shift from plain melted butter to something closer to toasted hazelnuts. That smell is the real signal, more reliable than color alone since it is easy to misjudge in a hot pan. Pull it off the heat the moment you smell it, since the residual heat in the pan keeps cooking the milk solids for a few more seconds.
It is tempting to bake the dough right away, especially with that smell of brown butter in the kitchen. Resist it. An overnight rest in the fridge firms up the butter enough that the cookies hold their shape and bake up thick, with that classic crackled top instead of spreading thin. If you are short on time, 45 minutes is the minimum, but the difference between 45 minutes and overnight is noticeable.
226 g (2 sticks) unsalted butter
267 g (1 1/3 cups) packed light brown sugar
67 g (1/3 cup) granulated sugar
2 large eggs, room temperature
15 g (1 tablespoon) vanilla extract
416 g (3 1/3 cups) all-purpose flour
5 g (1 teaspoon) baking powder
5 g (1 teaspoon) baking soda
3 g (1 teaspoon) kosher salt
200 g (7 ounces) semisweet or bittersweet chocolate, roughly chopped
Smoked flaky sea salt, for sprinkling (optional)