Preheat oven to 375 degrees. Prepare muffin pan (preferably jumbo muffin pan) with non-stick cooking spray.
Separate rolls into eight triangles and set aside. Combine sugar and cinnamon in a small bowl.
Dip each marshmallow into butter, then roll in cinnamon-sugar and place on a triangle dough. Pinch dough around marshmallow, sealing all edges. Make sure to seal well or all the marshmallow will escape.
Dip tops of dough into the remaining butter and then into the cinnamon-sugar. Place roll with the sugar side up into prepared muffin cups.
Bake at 375 degrees for 13-15 minutes. Eat warm.
For those interested in telling the Easter story while making the rolls:
Read the Easter story from the Bible, found in Matthew 27-28, Mark 15-16, Luke 23-24, and John 19-20.
Explain that Jesus is the marshmallow. After he died he was wrapped in linen (roll marshmallow in butter and cinnamon); put into a tomb (wrap with dough); and on the third day he rose from the tomb (open baked roll to find "empty tomb").