Whisk mayo, vinegar, salt, pepper, oregano, Italian seasoning, red pepper flakes, and garlic together in a bowl.
1/2 cup mayo, 1 Tablespoon red wine vinegar, 1/2 teaspoon kosher salt, 1/4 teaspoon freshly ground black pepper, 1 teaspoon dried oregano, 1/4 teaspoon red pepper flakes, 1 clove garlic
Add sliced pepperoncini, Parmesan, red onion, and lettuce. Toss well with tongs until thoroughly coated. Set aside.
1/4 cup sliced pepperoncini peppers, 1/4 cup thinly sliced red onion, 3-4 cups iceberg lettuce
Preheat oven to 425°F. Slice bread in half. Layer cheese on both sides of the bread and toast until the cheese is bubbly and the bread is toasted (about 3-4 minutes). Pile meat on top of the cheese on both sides of the bread (ham and prosciutto on one side with turkey, soppressata, capocollo and pepperoni on the other) by folding it so it's kind of fluffy and ruffled instead of flat. Then toast again until the meat is warm and bread is toasted (another 3-4 minutes). Sprinkle with fresh parm.
1 large loaf crusty Italian bread, 4 ounces sliced muenster cheese, 4 ounces sliced provolone cheese, 1/4 pound roasted turkey breast, 1/4 pound ham, 3 ounces sopressata salami, 3 ounces capocollo, 3 ounces prosciutto, 2 ounces deli sliced pepperoni, 1/3 cup freshly grated Parmesan cheese
Layer sliced tomato over the meat, then drizzle with olive oil and season with salt and pepper. Pile the lettuce mixture and additional grated Parmesan cheese on top. Add the top piece of bread, slice in half or fourths and serve!
1 medium beefsteak tomato, olive oil, Salt & pepper