Preheat the oven to 250°F. Line two full sheet pans (16x24) with parchment paper and set aside.
In an extra-large mixing bowl, combine cereals, Corn nuts, cheez-its, bagel chips, nuts, and pretzels. Toss to combine.
In a small bowl, whisk together ranch seasoning, dill, garlic salt, vegetable oil, and pickle juice.
Drizzle the seasoning mixture over the Chex mixture, stirring constantly to distribute the liquids over as much of the dry mixture as possible.
Stir until the seasoning is evenly distributed.
Spread the Chex mix on the prepared sheet pans, separating all of the pieces as much as possible into a single layer. If you’d like, you can divide the mixture between three sheet pans.
Bake for 30 to 45 minutes, stirring every 15 minutes until the Chex mix is completely dried and beginning to brown.
Allow the mixture to cool completely. Store in an airtight container.
Notes
In general, garlic and dill seasonings go well together - if you’d like to buy flavored pretzels, bagel chips, crackers, etc., anything garlic flavored will complement the dill pickle flavoring well. Or simply use plain as we did here.
When making a Chex mix, make sure to use your largest mixing bowl.
Try to lay it out in a single layer as best you can so it can cool and harden once baked and not stick together. If you need to speed up the process, you can put your baking sheets in the refrigerator.