Top two slices of the bread with the grated cheese, followed by the grated apple, 3-4 slices of Prosciutto di Parma, and some spinach leaves. Spread the other two slices of bread with 1 tbsp. chutney each, then place -chutney side down- on top of the spinach to create 2 sandwiches.
Lightly butter the outsides of both sandwiches and cook in a hot frying pan, weighed down by another heavy pan for 2-3 mins on each side until the outside is crisp and the cheese has melted. Serve with the remaining half apple and a handful of spinach leaves.