Prepare the Olive Salad: In a medium bowl, combine the green and black olives, giardiniera, roasted red peppers, capers, celery, and minced garlic. In a small bowl, whisk together the extra virgin olive oil, red wine vinegar, dried oregano, red pepper flakes, and freshly ground black pepper. Drizzle the dressing over the olive mixture and mix thoroughly. Cover and chill for a minimum of 1 hour to let the flavors blend. For optimal taste, refrigerate overnight.
Prepare the Bread: Slice the round sesame seed bread horizontally in half. Drizzle the dressing over the olive mixture and mix thoroughly. Cover and chill for a minimum of 1 hour to let the flavors blend. For optimal taste, refrigerate overnight.
Assemble the Sandwich: Spread a generous amount of the prepared olive salad over the bottom half of the bread, ensuring it covers the entire surface. Layer the mortadella, salami, and capicola evenly over the olive salad. Next, add the provolone cheese slices followed by the mozzarella cheese slices.
Top with Olive Salad: Spoon more of the olive salad over the layered meats and cheeses, pressing it down gently to help it adhere.
Complete the Sandwich: Place the top half of the bread over the fillings, pressing down firmly. Tightly cover the entire sandwich with plastic wrap and place it in the refrigerator for a minimum of 1 hour. Bottom of Form This step allows the flavors to meld and makes the sandwich easier to slice.
Serve: When ready to serve, unwrap the sandwich and use a sharp knife to cut it into wedges or quarters. Enjoy this hearty, flavor-packed sandwich with friends or family!