INSTRUCTIONS:
1 - Preheat the Oven:
- Start by preheating your oven to 375°F (190°C). Grease a 9x13-inch baking dish and set aside.
2 - Cook the Beef:
- Season the thinly sliced beef steak with salt and pepper.
- Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Add the seasoned beef to the skillet and cook until browned, about 2-3 minutes per side. Remove the beef from the skillet and set aside.
3- Sauté the Vegetables:
- In the same skillet, add the remaining tablespoon of olive oil. Add the thinly sliced onion, green bell pepper, red bell pepper, and mushrooms (if using) to the skillet.
- Sauté the vegetables until they are softened and caramelized, about 8-10 minutes. Add the minced garlic and cook for an additional minute.
4 - Prepare the Sauce:
- In a small bowl, whisk together the beef broth, Worcestershire sauce, soy sauce, and cornstarch (if using). Pour the sauce mixture into the skillet with the sautéed vegetables. Cook for 1-2 minutes, or until the sauce has thickened slightly.
5 - Assemble the Casserole:
- Spread half of the cooked vegetables in the bottom of the prepared baking dish. Top with half of the cooked beef slices.
- Layer half of the sliced provolone cheese over the beef and vegetables. Repeat the layers with the remaining vegetables, beef, and provolone cheese.
- Sprinkle the shredded mozzarella cheese evenly over the top of the casserole.
6 - Bake the Casserole:
- Cover the baking dish with aluminum foil and bake in the preheated oven for 20 minutes.
- After 20 minutes, remove the foil and bake for an additional 10-15 minutes, or until the cheese is melted and bubbly and the casserole is heated through.
7 - Serve and Enjoy:
- Once baked, remove the Philly Cheese Steak Casserole from the oven and let it cool for a few minutes before serving.
- Cut into squares and serve hot, garnished with chopped fresh parsley if desired.
With its tender beef, savory sautéed vegetables, and gooey melted cheese, Philly Cheese Steak Casserole is a comforting and satisfying dish that is perfect for any occasion. Whether enjoyed as a hearty dinner or served at a gathering with friends and family, this flavorful casserole is sure to be a hit. By following this easy recipe, you can recreate the classic flavors of the beloved Philly cheese steak sandwich in a convenient and delicious casserole form. So, gather your ingredients, preheat your oven, and get ready to indulge in the irresistible goodness of Philly Cheese Steak Casserole
