Preheat the oven to 325°F. Line a large baking sheet with parchment paper or a nonstick baking mat, and set aside.
Pour the pretzel twists into a large mixing bowl. Drizzle the butter on top of them. Use a rubber spatula to toss until all the pretzels are coated.
In a small bowl, combine the sugar and cinnamon, stirring until mixed.
Pour the cinnamon sugar mixture on top of the pretzels, and toss until all the pretzels are coated.
Transfer the pretzels to the prepared baking sheet.
Bake the pretzels for 30 minutes, gently stirring them with a heat-safe spoon or spatula every 10 to ensure all parts of the pretzels bake.
When the pretzels have baked for 30 minutes and no longer appear wet, remove from the oven, and let cool completely. This will take 20-45 minutes, just depending.
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Notes
How to store: Once cooled, transfer the pretzels to a gallon-sized plastic bag and seal tightly, pushing any extra air out of the bag. They will keep for more than a week if stored properly.