Preheat oven to 375°F (190°C). Line a baking sheet with parchment paper.
Unroll the crescent roll dough and separate into triangles. Pinch the seams together to form rectangles.
1 can refrigerated crescent rolls
In a small bowl, combine granulated sugar and ground cinnamon. Sprinkle half of the cinnamon-sugar mixture over the crescent roll rectangles, pressing it gently into the dough.
1 can refrigerated crescent rolls
Drizzle the melted butter over the cinnamon-sugar mixture.
1 can refrigerated crescent rolls
Starting from the shorter side, tightly roll up each rectangle into a log. Cut each log into 1-inch thick slices.
Place the cinnamon twists onto the prepared baking sheet, spacing them about 1 inch apart.
Bake for 10-12 minutes, or until golden brown and cooked through.
While the twists are baking, prepare the glaze (if using): whisk together powdered sugar, milk, and vanilla extract until smooth. Add more milk or powdered sugar to reach desired consistency.
1 can refrigerated crescent rolls
Once baked, let the cinnamon twists cool slightly on the baking sheet before drizzling with glaze. Serve warm.
Notes
These are best served fresh! You can also add chopped nuts to the cinnamon-sugar mixture for extra crunch.