The Philly Cheesesteak Casserole is a perfect option for those looking for an easy, flavorful dish that everyone will enjoy. Inspired by the classic Philadelphia sandwich, this casserole combines juicy meat, bold vegetable flavors, and creamy cheese—all in one baking dish. It’s also a great way to make use of ingredients you probably already have at home.
Ingredients
- 1 pound of beef (sirloin or ground beef)
- 1 large onion, sliced
- 1 green or red bell pepper, sliced
- 2 cloves garlic, minced
- 1 cup mushrooms (optional)
- 2 cups shredded provolone or mozzarella cheese
- 1 cup heavy cream or milk
- 2 tablespoons butter
- 1 tablespoon olive oil
- Salt and pepper to taste
- 4 cups French bread, cubed (or sandwich bread)
- Chopped parsley for garnish (optional)
Instructions
- Preheat the oven to 350°F (180°C).
- In a large skillet, heat the olive oil and butter. Add the beef and cook until browned. If using ground beef, cook thoroughly and crumble.
- Add the onion, bell pepper, mushrooms, and garlic. Cook until the vegetables are tender, about 5-7 minutes. Season with salt and pepper.
- In a large mixing bowl, combine the cooked beef and vegetables with the heavy cream and half of the shredded cheese.
- In a baking dish, arrange the bread cubes in an even layer.
- Pour the beef and cheese mixture over the bread, spreading evenly.
- Top with the remaining cheese.
- Bake for 20-25 minutes or until the cheese is bubbly and golden.
- Garnish with chopped parsley before serving.
- Enjoy your Philly Cheesesteak Casserole!

Tips for Perfect Results
- Choose the right meat: Sirloin or beef strips work well for their flavor and texture. Ground beef is also quick and convenient.
- Customize the vegetables: Feel free to add jalapeños, tomatoes, spinach, or other vegetables for a different twist.
- Cheese options: Mozzarella provides creaminess, while provolone adds a richer flavor. Mix your favorite cheeses for a unique taste.
- Watch the baking: Keep an eye on the casserole during the last few minutes to prevent the cheese from burning; you want it golden and bubbly.
Variations and Tips
- Low-carb version: Omit the bread or use crustless bread and serve the mixture as a cheesy gratin.
- Vegan option: Substitute the beef with seitan or tofu, and use vegan cheese and plant-based milk.
- Ideal sides: This casserole pairs beautifully with a fresh salad, baked potatoes, or grilled vegetables.
- Extra flavor boost: Add a dash of Dijon mustard or Worcestershire sauce to enhance the flavor.
What to Serve With
This Philly Cheesesteak Casserole is very versatile and can be paired with various sides. Some recommended options include:
- A fresh green salad with light vinaigrette
- Baked or French fries
- Steamed or grilled vegetables
- Tortilla chips or crispy bread for added crunch
