Preheat your oven to 350°F (175°C).

In a large bowl, cream together the softened butter, brown sugar, and granulated sugar.

Add the egg and vanilla extract, mixing well until combined.

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

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

Fold in the chocolate chips if using.

Drop tablespoon-sized balls of dough onto a lined baking sheet.

Bake in the preheated oven for 12-15 minutes or until golden brown.

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

Enjoy your fresh oat cookies with a glass of milk or your favorite beverage!