01 - Preheat oven to 350°F and line two large baking sheets with parchment paper.
02 - In a large bowl, use an electric mixer to cream together butter, granulated sugar, and brown sugar until light and fluffy.
03 - Mix in peanut butter thoroughly. Add eggs one at a time, mixing well after each. Stir in vanilla extract.
04 - In a separate bowl, whisk together oats, flour, baking soda, and salt.
05 - Gradually add the dry mixture to the wet mixture, mixing until just combined. Avoid overmixing.
06 - Fold in chocolate candies, chocolate chips, and crushed pretzels, using a spatula to distribute evenly.
07 - Scoop rounded tablespoons of dough onto prepared baking sheets, spacing each portion two inches apart.
08 - Bake for 10 to 12 minutes, until edges are golden and centers appear slightly underbaked.
09 - Allow cookies to cool on baking sheets for 5 minutes before transferring to a wire rack to cool completely.