Preheat & Prep: Preheat your oven to 375°F (190°C). Line two baking sheets with parchment paper.
Cream Butter & Sugar: In a large bowl using an electric mixer, beat the softened butter, brown sugar, and granulated sugar on medium speed until light and fluffy, about 2-3 minutes.
Add Wet Ingredients: Beat in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
Combine Dry Ingredients: In a separate small bowl, whisk together the flour, baking soda, and salt.
Mix Together: Gradually add the dry ingredients to the wet ingredients, mixing on low speed until just combined. Be careful not to overmix.
Fold in Mix-ins: Gently fold in the chocolate chunks, chopped pretzels, and chopped nuts using a spatula.
Scoop & Bake: Drop rounded tablespoons of dough onto the prepared baking sheets, leaving about 2 inches between each cookie.
Bake: Bake for 12-14 minutes, or until the edges are golden brown and the centers are set. For a chewier cookie, pull them out closer to 12 minutes. For a firmer cookie, bake for the full 14 minutes.
Cool: Let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.