Instructions

• Heat the oven to 350°F (180°C) and line two trays with parchment.
• Whisk flour, salt, and baking soda together.
• Microwave the cubed butter until almost melted, then whisk smooth.
• Whisk in both sugars for 15 seconds. Add the egg, yolk, and vanilla and whisk well.
• Mix in the dry ingredients until nearly incorporated, then stir in 1 cup of chips.
• Rest the dough for 5 minutes, then scoop 13 large mounds 2 inches apart and top with remaining chips.
• Bake one tray at a time, rotating halfway, until edges are golden and tops are pale golden, about 11 minutes.
• Cool on the tray so the centers finish cooking.