Preheat your oven to 350 F (175 C). Line baking sheets with parchment paper.
In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until the mixture is light and fluffy.
Beat in the egg and stir in the pure vanilla extract.
In a separate bowl, whisk together the all-purpose flour, rolled oats, baking soda, and salt.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Gently fold in the chocolate chips until they are evenly distributed throughout the cookie dough.
Drop rounded tablespoons of cookie dough onto the prepared baking sheets, leaving enough space between each cookie for spreading.
Bake in the preheated oven for 10-12 minutes or until the edges of the cookies are golden brown and the centers are set.
Allow the cookies to cool on the baking sheets for a few minutes before transferring them to wire racks to cool completely. Once cooled, enjoy the chocolatey goodness of your Chocolate Chip Oat Cookies.
