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

In a large mixing bowl, beat the softened butter, brown sugar, and granulated sugar together until light and fluffy, about 3-4 minutes.

Add the eggs into the mixture, one at a time, and then add the vanilla extract, mixing until well combined.

In another bowl, whisk together the all-purpose flour, baking soda, and salt. Gradually add this dry mixture to the wet mixture, stirring gently until just combined.

Fold in the old-fashioned oats, chocolate chips, and any optional ingredients like nuts or shredded coconut until well blended.

Use a cookie scoop or tablespoon to drop cookie dough onto the prepared baking sheet, spacing them about 2 inches apart.

Bake in the preheated oven for 10-12 minutes or until the edges are lightly golden.

Allow the cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.