Serve a sub cold or remove any lettuce, place sandwich on a baking sheet or piece of tinfoil and toast the prepared sub-sandwiches in a 400-F, 200-C preheated oven for 11-12 minutes. Add the lettuce back after heating is finished.

SUB SANDWICH
Italian Hero Submarine. 

All heroes subs are made with cold cuts and cheeses, and include one pound of meat and cheese per foot. They should be made with a crusty brick-oven-baked, one foot, Ciabatta bread loaf and it's appropriate to lightly spread with all these dressings (mayo, mustard, red wine vinegar and olive oil)

12 inch Ciabatta Italian Bread Loaf
1/4 lb Smoked ham  
1/4 lb Genoa salami 
1/4 lb Pepperoni 
1/4 lb Provolone cheese
Romaine lettuce 
Sliced, fried red bell peppers (fry in some olive oil until tender)

Optional: shredded lettuce, tomato slices, red onion slices, hamburger pickle slices, sliced black olives, hot peppers, salt, pepper, extra virgin olive oil and balsamic vinegar

An Italian sub, Italian combo, or Italian hoagie consists of Italian luncheon meats, typically; thin sliced capicola, "prosciutto cotto" (the Italian word for cooked ham,) and genoa salami, with provolone cheese, lettuce, tomato, oil, and vinegar. Thin sliced pepperoni and bologna are sometimes added, and less expensive ham is often substituted for capicola and prosciutto.