Preparation Steps

• Preheat oven to 375°F (190°C). Line baking sheets with parchment paper.
• In a medium bowl, whisk together flour and baking soda. Set aside.
• In a large bowl, cream together softened butter, granulated sugar, and brown sugar until light and fluffy.
• Beat in vanilla extract, egg, and egg yolk until well combined.
• Gradually mix in the flour mixture until just incorporated.
• Fold in chocolate chips until evenly distributed.
• Drop rounded tablespoons of dough onto prepared baking sheets, spacing them 2 inches apart.
• Bake for 9 to 11 minutes, or until edges are golden brown and centers are set.
• Cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.