Preheat the oven to 220˚F.
Pour the pretzels in a large rimmed baking sheet (or roasting pan).
Whisk together the melted butter, canola oil, sriracha sauce, buttermilk ranch dressing mix, garlic powder, cajun seasoning, and onion powder.
Pour over the pretzel sticks and stir until coated.
Sprinkle with grated Parmesan and stir until coated.
Bake at 220˚F for 30 minutes, stirring after 15 minutes.
