Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper or silicone baking mats.
Beat the softened butter, brown sugar, and granulated sugar together using an electric mixer until light and fluffy, about 3–4 minutes.
Mix in the eggs one at a time, beating well after each addition, then stir in the vanilla extract.
In a separate bowl, whisk together the all-purpose flour, baking soda, and salt.
Gradually add the dry ingredients into the wet mixture, mixing on low speed or stirring gently until just combined. Avoid overmixing.
Fold in the dark chocolate chips evenly with a spatula.
Drop rounded tablespoons of dough onto prepared baking sheets, spacing evenly. Bake for 10–12 minutes until edges are golden but centers remain soft.
Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.