Method:

Cut off the crusts of the breads.
Spread the chocolate hazelnut spread on 3 slices and cover each with another slice of bread.
In a bowl, whisk together the eggs and Super M.
Melt the butter in a pan. Cut the sandwiches into 3 batons and dip the batons into the egg mixture and let any excess mixture drop off.
Fry the batons in the pan until golden on both sides. In a bowl, combine the sugar and cinnamon. Once the batons are golden, transfer them into the cinnamon sugar and coat evenly. Remove and enjoy!