1In a large bowl, combine cereals, pretzels and nuts. In a saucepan, melt butter; stir in seasonings. Pour over cereal mixtures; toss to coat. Spread on an ungreased 15-in. x 10-in.X 1-in. baking pan. Bake at 250' for 1 hour, stirring every 15 minutes. Store in an airtight container. Yield: 8 cups.