I dont have much experience with Nutella but I am sure there are a # of ways you could 'hop up' the caloric intake in these <img src="i/expressions/face-icon-small-happy.gif" border="0">.
one other 'sweet' idea that is super good and quick is candied almonds, well you can do any nut actually, it is the crunchy cinnamon sugar kind if anyone is interested.
Seana-hope she liked the no-bakes!