In a large slow cooker, combine the cereal, pretzels and unsalted peanuts.
3 cup rice chex cereal, 3 cup wheat chex cereal, 3 cup corn chex cereal, 2 cup mini pretzels, 1 cup unsalted peanuts
In a medium bowl, whisk together the butter, Worcestershire sauce, soy sauce, BBQ sauce, garlic powder, onion powder and smoked paprika.
8 tablespoons unsalted butter, 3 tablespoons Worcestershire sauce, 1 tablespoon soy sauce, ¼ cup BBQ sauce, 1 teaspoon garlic powder, ½ teaspoon onion powder, ½ teaspoon smoked paprika
Drizzle the butter mixture over the cereal mixture and toss everything together until well combined.
Place the lid on the crockpot, turn to low and cook for 2 to 3 hours or until the cereal has lightly browned. Stir the chex mix every 30 minutes to ensure even coloring and to eliminate the possibility of anything burning.
Line a large baking sheet with parchment paper. Pour the chex mix onto the prepared sheet and spread evenly.
Let it cool completely before serving, about 15 minutes.