01 - Preheat oven to 350°F and line two large baking sheets with parchment paper.
02 - In a large bowl, cream together butter, granulated sugar, and light brown sugar until light and fluffy.
03 - Beat in peanut butter, then add eggs one at a time, mixing thoroughly after each addition. Blend in vanilla extract.
04 - In a separate bowl, whisk together oats, all-purpose flour, baking soda, and salt.
05 - Gradually mix dry ingredients into the wet mixture until just blended.
06 - Gently fold in chocolate candies, semisweet chocolate chips, and pretzels if using.
07 - Scoop rounded tablespoons of dough onto the prepared baking sheets, spacing each portion two inches apart.
08 - Bake for 10 to 12 minutes until edges are golden and centers remain soft.
09 - Allow cookies to cool on baking sheets for 5 minutes, then transfer to a wire rack to cool completely.