Heat your grill to low heat. Alternatively heat your air fryer to 350 degrees F. Today we’re using our Ninja Woodfire Outdoor Grill to do both!
Coat one side of each bread slice with butter and sprinkle with sugar. Turn the bread slices over and spread marshmallow cream on half the slices. The other slices get the chocolate spread. Sprinkle on the chocolate. Build the sandwiches by putting a marshmallow and a chocolate hazelnut slice together.
Grill the sandwiches low and slow until the sugar is caramelized and the sandwiches are golden brown. Marvel at the awesome sandwiches you made and then eat them immediately.