Creating the perfect Grinder Sandwich is simple with these easy-to-follow steps:

1. Prepare the Ingredients: Gather all your ingredients and ensure they are fresh.
2. Slice the Bread: Cut the Italian bread or sub rolls in half lengthwise.
3. Mix the Sauce: In a small bowl, combine mayonnaise, olive oil, red wine vinegar, Italian seasoning, salt, and pepper. Mix thoroughly.
4. Spread the Sauce: Generously spread the sauce on both sides of the sliced bread.
5. Layer the Meats: Place a layer of deli meats on the bottom half of the bread.
6. Add Cheese: Top the meat layer with slices of cheese.
7. Add Vegetables: Create a refreshing layer of shredded lettuce, followed by tomato slices, red onion, and pepperoncini.
8. Close and Press: Place the top half of the bread on and press down gently to combine the flavors.
9. Heat the Sandwich (optional): If desired, grill the sandwich on a pan or sandwich press until the bread is golden and the cheese melts.
10. Slice and Serve: Cut the sandwich into manageable portions and serve with your choice of side.