Some of the marshmallow sauce may leak out of the rolls while baking. If that happens, when you remove the rolls from the muffin tin you can use a spoon to scoop up the sauce and drizzle it on top of the roll. Be sure to remove the rolls from the muffin tin within about ten minutes of baking, and place them on parchment paper, to make sure they don't get stuck in the tin as they cool completely.