Preheat oven to 350℉.
In kitchen-aid (or large bowl) cream together butter, sugars, and peanut butter until smooth. Add eggs one at a time and beat until well blended. Add vanilla.
In a separate bowl, combine the flour, baking soda, and salt. Stir into the creamed mixture.
Mix in oats until just combined, scoop with a cookie scoop, use a fork to press a crisscross pattern on the top of each cookie and place onto cookie sheet.