Brown Butter Chocolate Chip Cookies

• 1 Egg+ 1 yolk

• 1 3/4 cup All purpose flour

• 1/2 tsp Baking soda

• 4 oz Bittersweet chocolate

• 3/4 cup Brown sugar

• 1/2 cup Granulated sugar

• 1 1/4 tsp Kosher sea salt

• 3/4 cup Semi-sweet chocolate chips

• 2 1/2 tsp Vanilla extract

• 14 tbsp Butter, unsalted