Step 1: Prepare the Filling
- Sauté the Vegetables: Heat olive oil in a large skillet over medium heat. Add the sliced onion, bell pepper, and mushrooms (if using) and cook until softened, about 5-7 minutes.
- Add the Garlic: Add the minced garlic and sauté for another 1-2 minutes until fragrant.
- Cook the Steak: Push the vegetables to one side of the pan and add the sliced steak to the other side. Cook for about 3-4 minutes until the steak is no longer pink. Season with salt, pepper, and Italian seasoning.
- Combine and Remove from Heat: Stir the steak and vegetables together, then remove the skillet from heat. Allow the mixture to cool slightly.
Step 2: Roll Out the Dough
- Prepare the Dough: Preheat your oven to 400°F (200°C). Roll out the pizza dough on a lightly floured surface into a large rectangle, about 12×14 inches.
- Add Cheese Layer: Sprinkle half of the mozzarella and provolone cheese in a line down the center of the dough, leaving about an inch border on the edges.
Step 3: Add the Filling and Roll
- Layer the Filling: Spoon the cooled steak and vegetable mixture evenly over the cheese layer.
- Top with More Cheese: Sprinkle the remaining mozzarella and provolone cheese over the steak mixture.
- Roll the Stromboli: Fold one side of the dough over the filling, then fold the other side, overlapping slightly. Tuck in the edges and pinch to seal tightly.
- Transfer to Baking Sheet: Carefully transfer the Stromboli to a baking sheet lined with parchment paper.
Step 4: Apply Egg Wash and Bake
- Brush with Egg Wash: Brush the top of the Stromboli with the beaten egg to give it a golden, shiny crust.
- Score the Top: Using a sharp knife, make a few shallow slashes on top to allow steam to escape.
- Bake: Place in the preheated oven and bake for 20-25 minutes, or until the crust is golden brown and the cheese is melted and bubbly inside.
Step 5: Serve
- Cool and Slice: Allow the Stromboli to cool for a few minutes before slicing.
- Serve with Dipping Sauce: Serve slices with warm marinara or pizza sauce for dipping.
Tips for Perfect Cheesesteak Stromboli
- Use Quality Cheese: Provolone gives a classic cheesesteak flavor, while mozzarella adds that melty, stretchy goodness.
- Freeze the Steak Slightly: Partially freezing the steak for about 15 minutes makes it easier to slice thinly.
- Don’t Overfill: Be cautious not to overfill your Stromboli, as too much filling can make it difficult to seal and may cause leaks.
Storage and Reheating
- Refrigerate Leftovers: Wrap leftovers tightly in foil or plastic wrap and store in the refrigerator for up to 3 days.
- Reheat: Reheat in a 350°F oven for 10 minutes or until warmed through, or in an air fryer at 325°F for 5-7 minutes for a quick, crispy result.
Enjoy this warm, cheesy Cheesesteak Stromboli for a perfect blend of steakhouse flavors in a delicious, shareable dish!