Philly Cheesesteak Stuffed Peppers pile lean shaved steak, onions, mushrooms, and plenty of melty provolone into tender roasted peppers. Just a little cream cheese makes the filling rich and creamy.
Preheat the oven to 400°F. Prepare a 9x13" baking pan by lining with parchment paper or spraying lightly with non-stick cooking spray.
Slice each bell pepper in half from top to bottom. Remove the insides and seeds from peppers.
Place each pepper in the pan, top side down, and bake for 15 minutes. Peppers should be slightly softened and starting to brown. Remove and set aside.
While the peppers are baking, heat a skillet with olive oil over medium heat. Add the shaved steak and season with the Worcestershire sauce, salt, and pepper. Cook until mostly browned, about 3 to 5 minutes.
Add the onions, mushrooms, and garlic to the pan and continue cooking for 10 minutes on medium heat until the onions are softened.
Turn off the heat. Add the cream cheese and stir until melted and evenly coated.
Flip the peppers over so that the cut side is up. Stuff each pepper evenly with the filling, then top each pepper with one slice of provolone cheese.
Bake for 7-10 minutes until the cheese is melted and beginning to brown. Optional: broil on high for 1 to 2 minutes to brown the cheese, just watch them carefully so they don't burn.
Notes
Extra liquid: Mushrooms can release quite a bit of moisture. If the filling looks watery, let the excess liquid cook off before stirring in the cream cheese so the stuffed peppers don't become watery.
Make ahead: The filling can be prepared ahead and refrigerated separately from the peppers. Stuff and bake the peppers when you're ready to serve.