Preheat oven to 225 degrees then take out two rimmed baking sheets and set aside.
Measure 6 cups Corn Chex, 6 cups Rice Chex, 4 cups Original Life cereal, and 4 cup pretzels, and add them to a large bowl.
When all of the ingredients are in the bowl, mix it up well!
Place butter in a microwavable bowl and melt in the microwave for 1 minute, or until fully melted.
If you need to put the butter in for more time, do it in 10-20 second increments and keep a watch on it.
Next, to the melted butter add 2 Tablespoons Seasoning Salt, 2 teaspoons garlic powder, 2 teaspoons onion powder, and 8 Tablespoons Worcestershire sauce and then whisk to combine.
If desired, add 1 tsp Chili powder and then mix it into the melted butter.
Drizzle the butter and seasoning mixture over cereal evenly and then using a large spatula, mix well.
Pour mixture onto baking sheets in an even layer.
Bake the Chex Mix for 1 hour, making sure to mix every 15 minutes.
Finally, remove the pans with the Chex Mix from the oven and let them rest to cool.
Notes
This bowl is a giant 8-Quart stainless steel gem. I use it for any baking when I make a large quantity like granola, granola bars, and this amazing Chex Mix. I highly recommend having this in your cupboard, additionally you can also use it for parties to hold chips.*Optional to add 1 tsp Chili powder*