Separate the crescent rolls into eight triangles.
Combine the sugar and the cinnamon together in a bowl. Dip each marshmallow into the melted butter, roll into the cinnamon-sugar mixture and place on a crescent roll triangle.
Pinch dough together around the marshmallow, sealing the edges.
Dip the tops of each marshmallow wrapped bundle into the remaining butter and then cinnamon-sugar.
Place sugar side up in greased muffin cups.
Bake at 375 degrees Fahrenheit for 10 - 15 minutes or until rolls are golden brown.
Allow to cool slightly.
