Spread the pizza sauce over the inside of the top and bottom of the bread, sprinkle the cheese on top of both sides, place the pepperoni on one side followed by the parmesan cheese.
Bake in a preheated 450F/230C oven until the cheese has melted, about 5-10 minutes.
Meanwhile, mix the lettuce, croutons and dressing.
When the cheese has melted, remove the loaf from the oven, place the lettuce over the top of the bottom slice of bread, top with the top, slice and enjoy!
