Levain Chocolate Chip Cookies (Copycat Recipe)

Bahan-bahan (8 porsi)

• ½ cup (1 stick) unsalted butter, at cool room temperature
• ¼ cup (packed) light brown sugar
• ¼ cup (packed) dark brown sugar
• ½ cup granulated sugar
• 1 tablespoon vanilla extract
• 1 teaspoon salt
• 1¾ teaspoons baking powder
• 1 teaspoon baking soda
• 2 large eggs
• 2¼ cups all-purpose flour (preferably King Arthur), spooned into measuring cup and leveled-off
• 12 ounces semi-sweet chocolate chips, best quality such as Ghirardelli
• 1½ cups coarsely chopped walnuts or pecans