Nutella is my nu client, so I’m thinking about what can be done with it, other than spreading it up and down my arms.
Fill the bread with the havarti, ham, apple and Nutella. Butter the outsides. Fry on a griddle until the bread is toasty brown on both sides and the cheese is oozing. Take the sandwich out of the pan with a spatula, put it on a cutting board and let it cool for about a minute. Cut your sandwich in half and eat.