Preheat the oven to 425 F. Cut each tortilla into 8 triangles and arrange on a large baking sheet. Drizzle melted butter over cut tortillas, then mix together with your hands. Make sure both sides are covered in butter.

In a medium bowl use a fork to mix together cinnamon and sugar. Working with a handful of tortillas at a time, toss tortillas in cinnamon sugar.

Return cinnamon-sugar-coated tortillas to the baking sheet in a single layer.

Bake until crispy, 8-10 minutes. Let cool on pan 5 minutes before serving.