In 13 x 9 x 2-inch baking pan heat cereal in a 300°F oven about 5 minutes till warm.
Remove from oven.
Stir in pretzel sticks and nuts.
Pour the melted butter or margarine over cereal mixture.
Sprinkle with parmesan cheese and dry salad dressing mix.
Return cereal mixture to oven and heat for 15 to 20 minutes more.