Preheat oven to 300°F. For seasoning mixture, melt butter in bowl in microwave or in a small saucepan. Remove from heat and stir in oil, Worcestershire sauce, seame seeds, paprika, garlic powder, onion powder, turmeric, celery salt, and sesame oil (if using). Whisk in miso.
Lightly coat a large roasting pan with cooking spray. In the roasting pan, combine chex-style cereal, bagel chips, pretzels, oyster crackers, and nuts. Whisk the seasoning mixture, then immediately pour over cereal mixture; toss well to coat. Add Cheerios and toss again.
Bake, stirring every 30 minutes, about 2 hours until toasted and fragrant. Let cool completely, then transfer to airtight containers.