14 Tbs unsalted butter (1 3/4 sticks)1/4 cup granulated sugar
2 cups packed dark brown sugar
2 cups unbleached all-purpose flour plus 2 tablespoons
1/2 tsp baking soda
1/4 tsp baking powder
1/2 tsp table salt
1 large egg
1 large egg yolk
1 Tbs vanilla extract
In 10-inch skillet over medium-high heat, heat 10 tablespoons butter until melted, about 2 minutes. Continue to cook, stirring constantly until butter is dark golden brown and has nutty aroma, 1 to 3 minutes. Remove skillet from heat and transfer browned butter to the heat-proof bowl of a stand mixer. Stir remaining 4 tablespoons butter into hot butter to melt; set aside to cool for 15 minutes.
While butter is cooling, adjust oven rack to middle position and heat oven to 350 degrees. Line 2 baking sheets with parchment paper.
In shallow baking dish or pie plate, mix granulated sugar and 1/4 cup packed brown sugar, rubbing between fingers, until well combined; set aside.
Sift together flour, baking soda, and baking powder; set aside.
Add remaining 1 3/4 cups brown sugar and salt to bowl with cooled butter; attach paddle and mix on medium-low speed until no sugar lumps remain, about 30 seconds. Scrape down sides of bowl with rubber spatula; add egg, yolk, and vanilla and mix on medium-low speed until fully incorporated, about 30 seconds. Scrape down bowl. Add flour mixture and mix until just combined, about 1 minute.
If needed, refrigerate dough until it is workable with your hands. I like to do this because the butter is no longer at room temperature and the cookies won't spread and be too crispy as they would have otherwise. I like softer, puffier cookies
Roll two heaping tablespoons of dough into ball between your palms, roll the ball in the sugar mixture, and then place it on the prepared baking sheet spacing the balls about 2 inches apart. (I found that these spread quite a bit so I played it safe and put 6 to a sheet - and even then they ran into each other.).
Bake one sheet at a time until cookies are browned and still puffy and edges have begun to set but centers are still soft (cookies will look raw between cracks and seem underdone); 12 to 14 minutes, rotating baking sheet halfway through baking.
Transfer the baking sheet to a wire rack and let the cookies cool on the sheet for 5 minutes then using a wide metal spatula, transfer the cookies to the rack to cool completely.
Cooking TimesPreparation Time: 20 minutes
Cooking Time: 14 minutes
Inactive Time: 30 minutes