Preheat the oven to 200C/400F.
Grate the cheese and mix it with cream and grated nutmeg.
Slice the bread and top each slice with half of the cheese mixture.
Transfer to a buttered baking dish.
Top one of the bread slices with ham and a bit more cheese and sandwich the bread together finishing with the cheese side up.
Bake in the preheated oven for 10-12 minutes.