01 -
Preheat the oven to 425°F (220°C). Line a standard sheet pan with parchment paper or a silicone baking mat.
02 -
Heat a skillet over medium heat and add a drizzle of olive oil. Add the sliced onion and bell pepper, seasoning with 1 tsp of dried Italian seasoning, garlic salt, and black pepper to taste. Sauté for 3-5 minutes until vegetables are softened but still have some bite.
03 -
Roll out the pizza dough into roughly a 12 x 16 inch (30 x 40 cm) rectangle on a lightly floured surface. Sprinkle half of the shredded mozzarella cheese evenly across the dough, leaving a 1-inch border around the edges.
04 -
Distribute the chopped steak evenly over the cheese layer. Top with the sautéed onions and peppers. Drizzle the Parmesan-Peppercorn dressing over the filling, then sprinkle the remaining mozzarella cheese on top.
05 -
Starting from the widest edge, tightly roll the dough into a log shape, pinching the seams and ends to seal. Transfer to the prepared baking sheet with the seam side down.
06 -
Brush the top and sides of the stromboli with melted butter. Sprinkle with the remaining ½ tsp dried Italian seasoning, a light dusting of garlic salt, and the grated Parmesan cheese.
07 -
Bake in the preheated oven for 18-20 minutes, until the stromboli is golden brown and the filling is heated through.
08 -
Remove from the oven and allow to rest for 5 minutes before slicing. This helps the filling set and prevents spillage when cutting.