Toss together cereals, pretzels and nuts in large bowl.
Heat oven to 325 degrees F.
Melt butter in medium-size saucepan over low heat. Remove from heat; stir in Worcestershire sauce, garlic salt and hot-pepper sauce, if desired. Pour over cereal mixture; toss until well combined. Transfer to two 15 x 10 x 2-inch jelly-roll pans.
Bake in 325 degree F oven for 30 to 40 minutes, until cereal is golden and crisp. Store in airtight container for up to 30 days. Makes 4-1/2 quarts.