Preheat your oven to 250° F and set out a large baking tray. If desired, line the tray with parchment paper.

Mix the cheese crackers, mini pretzels, and square rice cereal in a large bowl. Set aside.

In a small bowl, whisk the melted butter, ranch seasoning packet, garlic powder, onion powder, and dried dill. Immediately pour the butter mixture over the crackers, pretzels, and cereal. Use a large spoon or silicon spatula to mix the ingredients together until the butter and seasoning have coated the mixture. If there are any clumps of seasoning, use the spoon or your hands to break it up.

Transfer the ranch snack mixture onto the prepared baking tray and spread into a single layer.

Bake the ranch snack mix in the oven for 20 minutes, tossing the mixture half way through to ensure even baking.

Remove the tray from the oven and let the crackers cool completely on the tray. Leftovers will stay fresh in an airtight container at room temperature for up to one week.