• 165 g (3/4 cup packed) light brown sugar, packed light
• 128 g Bittersweet chocolate chips
• 25 g Cocoa powder, Dutch-process
• 541 g Flour, unbleached
• 1 3/4 tsp Sea salt, fine
• 1/4 cup Semi sweet chocolate chips
• 1 tbsp Vanilla bean paste or pure vanilla extract