01 - Set the oven temperature to 350°F. Line two baking sheets with parchment paper for easy cookie removal and cleanup.
02 - In a medium bowl, whisk together the all-purpose flour, baking soda, and fine sea salt until evenly mixed.
03 - In a large bowl, beat softened unsalted butter with granulated sugar and brown sugar on medium speed until light and creamy, approximately 2 to 3 minutes.
04 - Add eggs one at a time to the creamed mixture, mixing well after each addition. Stir in the pure vanilla extract thoroughly.
05 - Gradually add the dry mixture to the wet ingredients, stirring just until fully combined to avoid overmixing.
06 - Gently fold the semisweet chocolate chips or chunks into the dough to ensure even distribution.
07 - Drop heaping tablespoons of dough onto the prepared baking sheets, spacing each mound approximately 2 inches apart to allow for spreading.
08 - Lightly sprinkle each dough mound with a pinch of flaky sea salt to enhance the sweet-and-salty flavor profile.
09 - Bake in the preheated oven for 10 to 12 minutes, or until cookie edges turn golden and centers are set but still soft.
10 - Allow cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.