Preheat the oven to 375 degrees F.
Mix the cinnamon and sugar together in a small bowl.
Put the butter in another bowl.
Roll out the crescents.
Dip 1 marshmallow into the butter making sure the entire thing is coated.
Move to the cinnamon sugar mixture and roll around until completely covered.
Add to the widest part of the crescent roll.
Fold the long side up and then wrap the remaining dough around the marshmallow, tucking the ends under.
Place seam side down on an ungreased baking sheet. Repeat with remaining marshmallows.
Bake for 9-12 minutes or until golden brown on top.
Remove and let cool for a few minutes before eating. Best served immediately.