Scare Crow Scramble

3 cups small pretzels
3 cups shoestring potatoes
3 cups Spanish peanuts
1/2 cup seasoned croutons
1 (4 1/2 ounce) can French-fried onions
1/2 cup butter
1/2 cup Parmesan cheese

Mix well. Bake at 250 degrees F for 1 hour, stirring often.