Preheat the oven to 350°F (175°C).
In a large mixing bowl, cream the softened butter, brown sugar, and granulated sugar together until light and fluffy.
Beat in the eggs one at a time, then stir in the vanilla extract until well combined.
In a separate bowl, combine the all-purpose flour, baking soda, and salt. Gradually add this dry mixture to the wet mixture, stirring until just combined.
Fold in the rolled oats and chocolate chips until evenly distributed throughout the dough.
Drop tablespoon-sized portions of the dough onto ungreased baking sheets or lined with parchment paper, leaving space between each cookie.
Bake in the preheated oven for 10-12 minutes or until the edges are lightly golden and the centers are set.
Remove from the oven and allow the cookies to cool on the baking sheets for 5 minutes before transferring them to wire racks to cool completely.