Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a large mixing bowl, combine softened unsalted butter with brown sugar and granulated sugar. Beat on medium speed for about 2 minutes until creamy.

Add one large egg and vanilla extract. Mix on low speed until fully blended.

In a separate bowl, whisk together all-purpose flour, baking soda, and salt.

Gradually add the dry mixture to the wet mixture, stirring until just combined.

Fold in the semi-sweet chocolate chips using a spatula.

Optional: Chill the dough for 30 minutes to enhance texture.

Using a cookie scoop, place dollops of dough on the baking sheet, spaced 2 inches apart. Bake for 9-11 minutes.

Remove from the oven and let cookies rest for about 5 minutes before transferring to a wire rack.