Step 3: Assemble the Casserole
- Preheat your oven to 375°F (190°C).
- In a greased 9×13-inch baking dish, layer the cubed bread evenly on the bottom.
- Spread the cooked steak and sautéed vegetables over the bread.
- Pour the creamy cheese sauce evenly over the top.
- Sprinkle shredded mozzarella on top for a golden, melty finish.
Step 4: Bake to Perfection
- Cover the casserole with foil and bake for 20 minutes.
- Remove the foil and bake an additional 10–15 minutes until the top is bubbly and lightly golden.
- Let the casserole rest for 5 minutes before serving — this helps it set and makes it easier to slice.
Step 5: Serve and Enjoy
Garnish with fresh parsley if desired and serve hot. Pair it with a simple side salad or roasted vegetables for a complete meal.
Tips for the Best Philly Cheesesteak Casserole
- Meat choice: Ribeye is ideal for tenderness, but sirloin or even pre-cooked roast beef works well.
- Cheese: Don’t skimp on cheese — Provolone gives an authentic Philly flavor, but a mix of Cheddar and mozzarella makes it extra gooey.
- Make-ahead: You can assemble the casserole a day in advance and refrigerate it, then bake it fresh before serving.
This Philly Cheesesteak Casserole transforms the iconic sandwich into a creamy, comforting baked dish that everyone will love. It’s the perfect combination of melty cheese, tender beef, and sweet sautéed peppers — all in a single, easy-to-serve meal.
If you want, I can also make a lighter or keto-friendly version that’s just as cheesy and delicious.
Do you want me to do that?
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