Prepare the Filling:

• In a large skillet, heat the olive oil over medium-high heat.
• Add the sliced onions and bell pepper (and mushrooms, if using). Sauté until the vegetables become soft and slightly caramelized (about 5–7 minutes).
• Add the minced garlic and cook for an additional 1 minute.
• Add the steak strips to the skillet, seasoning with salt and pepper. Cook until the steak is browned and just cooked through (approximately 3–5 minutes). Remove from heat and set aside.

Prepare the Dough:

• Preheat your oven to 400°F (200°C).
• On a lightly floured surface, roll out the pizza dough into a large rectangle (about 12 x 16 inches).

Assemble the Stuffed Breadsticks:

• Evenly sprinkle one layer of shredded cheese over the entire dough.
• Distribute the warm Philly cheesesteak filling evenly over the cheese layer.
• If desired, add an extra layer of cheese on top of the filling.
• Starting from one of the longer sides, roll the dough tightly into a log, ensuring the filling is secured inside.
• Using a sharp knife, cut the log into 1 to 1½-inch thick slices.

Bake:

• Place the breadstick slices on a baking sheet lined with parchment paper, spacing them about 1 inch apart.
• Brush the tops lightly with melted butter and sprinkle with garlic powder and dried oregano.
• Bake in the preheated oven for 15–20 minutes, or until the breadsticks turn golden brown and the cheese is bubbly.

Serve:

• Allow the breadsticks to cool for a couple of minutes.
• Serve warm as a delicious snack, appetizer, or even as a main dish alongside a dipping sauce like marinara or a creamy cheese dip.