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Preheat Oven: Preheat your oven to 375°F (190°C). Line a baking sheet with parchment paper or lightly grease it.
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Roll Out Dough: On a lightly floured surface, roll out the pizza dough into a large rectangle, approximately 12×18 inches.
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Layer Ingredients: Spread the marinara sauce evenly over the dough, leaving a 1-inch border around the edges. Layer the provolone cheese, salami, pepperoni, ham, shredded mozzarella, grated Parmesan, roasted red peppers, and black olives on top of the sauce. Sprinkle with dried oregano and basil.
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Roll the Dough: Starting with one of the longer sides, carefully roll the dough tightly into a log, tucking in the sides as you go to seal in the filling. Pinch the seams and ends to seal.
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Transfer to Baking Sheet: Place the rolled stromboli seam-side down on the prepared baking sheet.
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Brush with Egg Wash: Brush the beaten egg over the top and sides of the stromboli to give it a golden, shiny crust.
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Bake: Bake in the preheated oven for 25-30 minutes, or until the crust is golden brown and the filling is hot and bubbly.
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Cool and Slice: Allow the stromboli to cool for a few minutes before slicing. Serve with extra marinara sauce for dipping.
