Preheat your oven to 375 degrees.
Lightly flour your work surface. Roll out the crescent roll dough lightly so that the crescent triangles all stick together, forming one solid rectangle shaped dough. Evenly spread the Nutella over the crescent roll dough. Roll up lengthwise & slice into 1.5" rolls.
To make large Nutella rolls, place 3 of the slices into a regular sized muffin tin. To make the minis, place one roll each into a mini muffin tin. Bake the large ones for 12-15 minutes & the mini ones for 8-10 minutes.
Serve by themselves or top with cream cheese frosting (recipe follows).