Melt butter in a medium saucepan over low heat and stir in the next five ingredients. Cook until this begins to bubble stirring to combine. Remove from heat. In a large bowl, mix the snack mix with the nuts and pour sauce over stirring to coat evenly. Spray a deep roasting pan with cooking spray and pour in the snack mix. Cook in a 250 degree oven for 1 hour stirring every 15 minutes. Pour this out onto wax paper, coated with cooking spray, and let cool. Break apart and store in an airtight container.