Creating the Italian Grinder Sandwich is simple when you follow these steps:

1. Prepare the Bread: Slice the sub roll lengthwise without cutting all the way through. This creates a hinge for your sandwich.

2. Spread Mayonnaise: Spread a layer of mayonnaise on the inside of both halves of the bread.

3. Layer the Meats: Start with salami, placing it on one side of the bread, followed by ham, and finally provolone cheese.

4. Add Veggies: Layer the shredded lettuce and sliced tomatoes on top of the meats. Follow this with sliced pepperoncini, and if desired, olives.

5. Season to Taste: Sprinkle salt and pepper over the vegetables for added flavor.

6. Drizzle with Dressing: Pour Italian dressing over the layered ingredients to add a zesty kick.

7. Close the Sandwich: Carefully fold the other half of the bread over the fillings to complete the sandwich.

8. Toast if Desired: If you like your sandwich warm and crispy, place it in a panini press or a skillet with a bit of butter for 2-3 minutes on each side until golden.

9. Slice and Serve: Cut the sandwich in half for easier eating and serve immediately.

By following these steps, you’ll create a delightful Italian Grinder Sandwich that will impress anyone at your dining table.