Preheat oven to 350° F. Line a rimmed baking sheet with parchment paper.

Stir together the granulated sugar and cinnamon. Set aside.

Place the pretzels in a large bowl. Add melted butter. Stir to combine. Sprinkle the cinnamon-sugar mixture over the pretzels. Stir gently to coat the pretzels with the sugar mixture.

Spread pretzels onto a baking sheet. Bake until the sugar bubbles and pretzels are golden brown, about 10 minutes.

Remove the pan from the oven and let pretzels cool on the pan. Once the pretzels are cool, break apart.

Store pretzels in an airtight container for up to one week.