Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper or a silicone mat.

In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.

Beat in the egg and vanilla extract until well combined.

In a separate bowl, whisk together the flour, baking soda, and salt.

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

Fold in chocolate chips or nuts if desired.

Scoop rounded balls of dough onto the prepared baking sheet, spacing them about 2 inches apart.

Bake for 10-12 minutes, or until the edges are lightly golden.

Allow the cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.