I firmly believe that the smell of cookies baking is one of life's greatest comforts, and when you brown the butter first — oh, darlings, it's transformative. The kitchen fills with this intoxicating, nutty, almost toffee-like aroma that makes everyone suddenly appear from whatever corner of the house they were hiding in. These cookies are everything I want: shatteringly crisp at the edges, chewy and slightly underdone in the middle, with pools of melted dark chocolate in every bite. Do rest the dough overnight if you can bear the wait. You will be rewarded with a depth of flavor that is nothing short of magnificent.