Creating your own Oven-Baked Italian Subs at home is easy when you follow these simple steps:

1. Preheat the Oven: Set your oven to 375°F (190°C) to preheat while you prepare the subs.

2. Prepare the Rolls: Slice each sub roll in half lengthwise, ensuring not to cut all the way through. This will help hold the filling.

3. Drizzle Olive Oil: Brush the inside of each sub roll lightly with olive oil for added flavor and to prevent sogginess.

4. Layer the Deli Meats: Begin by layering the sliced salami at the bottom of each roll, followed by the pepperoni and ham.

5. Add Roasted Red Peppers: Place slices of roasted red peppers evenly over the meat layers for a burst of flavor.

6. Sprinkle the Cheese: Generously sprinkle the provolone cheese and mozzarella cheese over the top of the peppers, ensuring every bite will be cheesy.

7. Seasoning: Sprinkle Italian seasoning, salt, and pepper over the cheese to enhance the flavors.

8. Add Olives: Distribute the sliced olives evenly on top of the cheese for an added salty kick.

9. Wrap in Foil: Tightly wrap each sub in aluminum foil. This will help create a steaming effect that keeps everything moist while baking.

10. Bake: Place the wrapped subs on a baking sheet and put them in the preheated oven. Bake for 15-20 minutes or until the cheese is bubbling and melted.

11. Serve: Remove the subs from the oven, carefully unwrap the foil, and transfer them to a serving platter.

12. Garnish: Add fresh basil or parsley on top for a burst of color and freshness.