Instructions:

1. Preheat the Oven:

   • Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.

2. Prepare the Dough:

   • On a lightly floured surface, roll out the pizza dough into a rectangle (approximately 12x16 inches). Aim for an even thickness.

3. Add the Filling:

   • Sprinkle shredded mozzarella evenly over the dough, leaving about an inch border around the edges.

   • Layer the sliced pepperoni, salami, and ham on top of the cheese.

   • Add the sliced bell peppers, followed by the grated Parmesan cheese.

   • Sprinkle dried oregano, garlic powder, and red pepper flakes (if using) over the filling for added flavor.

4. Roll the Stromboli:

   • Starting from one long side, carefully roll the dough tightly into a log shape. Pinch the edges to seal and tuck the ends under to prevent the filling from escaping.

5. Brush and Score:

   • Place the rolled Stromboli seam-side down on the prepared baking sheet.

   • Brush the top with the beaten egg and drizzle with olive oil.

   • Use a sharp knife to make a few diagonal slashes on top of the Stromboli to allow steam to escape.

6. Bake:

   • Bake in the preheated oven for about 25-30 minutes, or until the Stromboli is golden brown and cooked through.

7. Cool and Serve:

   • Remove from the oven and let it cool for a few minutes. Sprinkle with additional dried oregano if desired.

   • Slice into pieces and serve warm with marinara sauce on the side for dipping.

Enjoy your homemade Italian Stromboli! Perfect for a family dinner or a fun appetizer for gatherings!