Heat oven to 250° F. In 13 x 9-inch baking pan, combine cereal, chow mein noodles, peanuts and cashews; mix well.
In small bowl, combine oil, soy sauce, garlic powder and onion powder; blend well. Quickly pour over cereal mixture; stir to coat evenly.
Bake 1 hour, stirring every 15 minutes. Transfer to baking sheet, spreading mixture in even layer. Cool completely. Store tightly covered.
Servings: 10 cups