Instructions:
Preheat the Oven: Set the oven to 425°F (220°C). Line a standard sheet pan with parchment paper or a silpat mat.
Cook the Vegetables: Heat a few drizzles of olive oil in a skillet. Add the onion and bell pepper, seasoning them with 1 tsp dried Italian seasoning, garlic salt, and black pepper. Sauté for 3-5 minutes until they are soft and fragrant.
Prepare the Dough: On a clean surface, spread out the pizza dough into a 12 x 16 inch rectangle. Evenly sprinkle half of the shredded mozzarella over the dough.
Assemble the Stromboli: Lay the chopped steak evenly over the layer of cheese. Scatter the sautéed vegetables on top of the steak, then drizzle the entire arrangement with the
Parmesan-Peppercorn dressing. Finish by covering with the remaining mozzarella.
Roll the Dough: Start rolling the dough from the longest edge, ending with the seam side down. Place it seam side down on the prepared baking sheet.
Add Toppings: Brush the surface with melted butter, then sprinkle over the remaining 1/2 tsp of Italian seasoning and a bit more garlic salt. Sprinkle the grated Parmesan cheese as the final topping.
Bake: Transfer the stromboli to the preheated oven and bake for 18-20 minutes, or until it turns golden brown. Allow it to rest for 5 minutes before slicing.
