1. Cut 4 slices of sourdough bread and put butter and ham on two of the slices.
2. Chop the artichoke hearts and place them and the basil leaves on top of the ham.
3. Spread the two other bread slices with a thick layer of Castello® Double Cream Truffle.
4. Place the bread slices with the cheese on top of the other two bread slices with the ham.
5. Grill the sandwiches in a frying pan or in the oven until the bread is golden and the cheese is melted.