Using a mixing bowl add butter, brown sugar, sugar, egg, & vanilla & stir together. Add flour & baking soda & mix. Add oats & stir until well combine. Add in chocolate chips & mix.
Scoop into 1" balls & place on greased cookie sheet.
Bake 10-12 minutes or until edges start to turn a light golden brown.
Yields about 32 cookies.
Recipe by THE SEMISWEET SISTERS at http://www.thesemisweetsisters.com/2014/08/12/chocolate-chip-oatmeal-cookies/