Making Sheet Pan Philly Cheesesteak can be effortless when you follow these steps:

1. Preheat the Oven: Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.
2. Prepare the Steak: In a bowl, combine the thinly sliced ribeye with olive oil, garlic powder, salt, and pepper. Toss to coat evenly.
3. Arrange the Ingredients: Spread the seasoned steak onto the prepared baking sheet. Surround with sliced bell peppers and onions.
4. Roast in Oven: Place the baking sheet in the preheated oven. Roast for 15-20 minutes until the vegetables are tender and the steak is cooked through.
5. Add Cheese: Remove the pan from the oven. Lay slices of provolone cheese over the steak and vegetable mixture. Return to the oven and roast for an additional 2-3 minutes until the cheese is melted.
6. Garnish and Serve: Once the cheese is melted and bubbly, remove the baking sheet from the oven. Garnish with fresh parsley, if desired.

These simple steps will lead you to an incredible dish that tastes like it came from your favorite deli!