Roll out the shortcrust pastry and make 12 strips of 10 cm each. Brush them with oil and place on top of them a slice of Parma Ham and apples slices cut very thin (use the potato peeler). Place them next to each other along the strip.
Cook them in a muffin pan in conventional oven at 180 degrees for 15 minutes. In order not to dry the ham and the apples, cover each rose with silver paper.