Start by slicing the medium tomato and thinly slicing the optional red onion to ensure freshness.

Carefully slice open the hoagie rolls without cutting all the way through.

Layer the salami, capicola, and provolone cheese inside the rolls followed by shredded romaine lettuce, tomato slices, onions, and banana peppers.

In a small bowl, whisk together the extra virgin olive oil and balsamic vinegar.

Drizzle the dressing over the fillings and season with salt and pepper.

Gently close the rolls, pressing down to meld the flavors, and serve. Optionally, cut in half.