Making an Italian Grinder Sandwich is simple if you follow these easy steps:

1. Prepare the Bread: Slice the Italian hoagie roll lengthwise, leaving one edge intact to create a hinge.
2. Layer the Meats: Start by layering the salami, capicola, and mortadella evenly inside the roll.
3. Add Cheese: Place the provolone cheese slices on top of the meats.
4. Add Vegetables: Top with shredded lettuce, tomato slices, red onions, and pepperoncini.
5. Season: Sprinkle Italian seasoning, salt, and pepper over the vegetables for added flavor.
6. Prepare the Dressing: In a small bowl, mix the olive oil and red wine vinegar. Drizzle this dressing over the sandwich.
7. Close the Sandwich: Carefully close the hoagie roll, pressing down gently to compress the ingredients slightly.
8. Toast (Optional): For an extra layer of deliciousness, place the sandwich on a pan or griddle on medium heat. Toast each side for about 5 minutes until the bread is golden and the cheese is melted.
9. Slice and Serve: Once toasted, remove the sandwich from the heat and slice it diagonally. Serve with chips or a side salad if desired.

Creating this fantastic Italian Grinder Sandwich is quick and fun, especially with its vibrant flavors and textures coming together harmoniously.