01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, and fine sea salt. Set aside.
03 - In a large mixing bowl, beat butter, brown sugar, and granulated sugar until light and fluffy, about 2-3 minutes.
04 - Add eggs one at a time, mixing well after each addition. Stir in vanilla extract.
05 - Gradually add the dry ingredients to the wet ingredients, mixing on low speed until just combined.
06 - Fold in chocolate chips or chunks with a spatula.
07 - Scoop dough (about 2 tablespoons per cookie) onto prepared baking sheets, spacing cookies at least 2 inches apart.
08 - Sprinkle a pinch of flaky sea salt on top of each dough mound.
09 - Bake for 10-12 minutes, until edges are golden but centers look slightly underbaked.
10 - Let cookies cool on the baking sheets for 5 minutes before transferring to a wire rack to cool completely.