Butter one side of each slice of Hawaiian sweet bread.

Place half of the Fontina cheese on the non-buttered side of one slice of bread.

Carefully pile the fresh raspberries on top of the cheese.

Add the remaining Fontina cheese over the raspberries, then place the second slice of bread on top, buttered side facing out.

Preheat a skillet or griddle over medium heat.

Cook the sandwich for about 4 ½ minutes on each side, until golden brown and the cheese is melted, adjusting the cooking time as needed to ensure the Fontina cheese is gooey.

Use a melting dome if available to help melt the cheese evenly.

Once cooked, remove the sandwich from the skillet and serve hot.