01 - Preheat oven to 350°F and line two large baking sheets with parchment paper.
02 - In a large bowl, beat the butter, granulated sugar, and brown sugar until light and fluffy using an electric mixer.
03 - Add creamy peanut butter and mix to combine. Add eggs one at a time, beating well after each, then mix in vanilla extract.
04 - In a separate bowl, whisk together the oats, flour, baking soda, and salt.
05 - Gradually add dry ingredients to the wet batter, mixing just until combined.
06 - Gently fold in the chocolate candies, semisweet chocolate chips, and pretzels if using.
07 - Scoop heaping tablespoons of dough onto the prepared baking sheets, spacing each about two inches apart.
08 - Bake for 10 to 12 minutes until the edges turn golden and centers remain soft.
09 - Allow to cool on baking sheets for 5 minutes, then transfer cookies to a wire rack to cool completely.