Preheat the oven to 200°C. Grease a muffin tray with oil.
Using a cookie cutter, cut bread into 12 large round discs and arrange in muffin to form a nest. Brush bread with oil and then bake in the oven for 10-15 minutes to set and dry out.
Remove then add Napoli sauce, olives, bocconcini and kabana slices. Return to oven and bake for a further 10-15 minutes to melt cheese.