Preheat your oven to 250˚ F. Add Chex cereals, Kix cereal, GF pretzels and cashews to large bowl and mix until well combined.
Add butter to a sauce pan and heat until melted. Whisk in Worcestershire sauce, chili powder, onion powder, celery salt and garlic powder.
Pour butter sauce over the dry ingredients and mix until it’s evenly coated.
Transfer the mixture to 2 large baking sheets.
Place in the oven and bake for about 1 hour, stirring every 15 minutes. Once it’s golden brown, remove the pan from the oven and let it to cool to room temperature.
Place in a serving bowl to eat right away or in an airtight container for storage.