Preheat your oven to 350°F (175°C).

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

Beat in the eggs one at a time and stir in the vanilla extract.

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

Add the dry mixture to the wet ingredients and mix until just combined.

If using, gently fold in chocolate chips or raisins.

Using a cookie scoop or tablespoon, drop rounded balls of dough onto a baking sheet lined with parchment paper.

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

Let them cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.