Set oven to 375°F (190°C) and line a baking sheet with parchment paper.
Spread crescent roll dough and press seams together to form one large sheet.
Coat the surface evenly with melted butter.
Mix cinnamon and sugar; sprinkle over buttered dough.
Bake for 10–12 minutes or until golden brown.
Remove from oven and let cool for a few minutes.
Whisk powdered sugar, milk, and vanilla until smooth.
Drizzle glaze over pizza and slice to serve.
