1¼cupssemisweet chocolate chipsplus a few more after baking
Instructions
Preheat the oven to 375 degrees. Line a baking sheet with a silpat mat or parchment paper.
Whisk flour and baking soda in a small bowl, and set aside.
Melt 10 tablespoons of butter in a large skillet over medium-high heat for about 2 minutes. Cook, swirling constantly, until the butter is dark golden brown and has a nice nutty aroma, 1-3 minutes.
Remove the skillet from the heat and carefully pour the browned butter into a large heatproof bowl. Stir in the remaining 4 tablespoons of butter until completely melted.
Add white and brown sugars, salt, and vanilla extract to the butter, and whisk until fully combined.
Add the egg and extra yolk to the butter mixture and whisk until smooth, with no sugar lumps remaining, for about 30 seconds.
Let the mixture stand for 3 minutes, then whisk for 30 seconds. Repeat 2 more times until the mixture is thick, smooth, and shiny.
Gradually add the flour mixture to the butter mixture and stir until just combined. Add the chocolate chips and mix.
Drop dough by rounded spoonfuls (about 1 tablespoon per cookie), 2 inches apart, onto the prepared baking sheet.
Place in the oven and bake until the cookies are golden brown and the edges have begun to set, but the centers are still soft, about 8-10 minutes, rotating the baking sheet halfway through baking.
Remove from the oven. Immediately, gently push a few extra chocolate chips on top of each cookie, if desired.
Let the cookies sit for a few minutes, then move them to a wire rack to cool completely.