Gocciole - Italian Double Chocolate Chip Cookies

Ingredients (11)

• 1 1/2 cups purpose flour (1 or 2 tablespoons extra if needed) (195 grams)
• 2 tablespoons corn starch
• 1/2 teaspoon baking soda
• 1 pinch salt
• 1 tablespoon cocoa
• 1/2 cup butter (salted / softened) (105 grams)
• 1/4 cup 2 tablespoons granulated sugar (75 grams)
• 2 tablespoons brown sugar (packed)
• 1 large egg
• 1/2 teaspoon vanilla
• 1/2 cup + 2 tablespoons mini chocolate chips (divided)