Preheat your oven to 375°F (190°C).
In a large skillet, heat the olive oil over medium heat. Add the sliced onions and bell peppers, and sauté for about 5 minutes until they start to soften.
Add the mushrooms and garlic to the skillet, cooking for an additional 3-4 minutes until the mushrooms are tender.
Push the vegetables to the side of the skillet and add the sliced ribeye steak. Season with Worcestershire sauce, salt, and pepper. Cook until the steak is browned and cooked through, about 5-7 minutes. Mix everything together in the skillet.
Slice the hoagie rolls in half lengthwise and place them on a baking sheet.
Evenly distribute the steak and vegetable mixture over the hoagie rolls.
Layer the provolone cheese on top of the steak mixture, followed by the shredded mozzarella cheese.
Bake in the preheated oven for 10-12 minutes, or until the cheese is melted and bubbly.
Remove from the oven and let cool for a few minutes. Garnish with chopped parsley before serving.