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 beat together unsalted butter, granulated sugar, and light brown sugar until light and fluffy.
03 - Blend in creamy peanut butter. Add eggs one at a time, beating well after each addition, then stir in vanilla extract.
04 - In a separate bowl, whisk together old-fashioned oats, all-purpose flour, baking soda, and salt.
05 - Gradually incorporate the dry ingredients into the wet mixture, mixing until just combined.
06 - Gently fold in red, white, and blue chocolate candies, semisweet chocolate chips, and mini pretzels if using.
07 - Scoop rounded tablespoons of dough onto prepared baking sheets, spacing them two inches apart.
08 - Bake for 10 to 12 minutes until edges are golden and centers remain soft.
09 - Let cookies cool on baking sheets for five minutes, then transfer to a wire rack to cool thoroughly.