Philly Cheese Steak Casserole

Step 4: Combine Everything

Return the sautéed peppers and onions to the skillet with the beef mixture. Stir thoroughly so the vegetables are evenly distributed throughout the creamy beef base.

At this point, taste the mixture and adjust seasoning if needed.

Step 5: Assemble the Casserole

Preheat your oven to 375°F (190°C).

Lightly grease a medium-sized baking dish (about 9×13 inches). Transfer the beef and vegetable mixture into the dish and spread it evenly.

Sprinkle shredded provolone or mozzarella cheese generously over the top. For a more classic cheesesteak flavor, you can layer sliced provolone across the entire surface.

Step 6: Bake to Perfection

Place the casserole in the preheated oven and bake for 15–20 minutes, or until the cheese is completely melted and bubbly.

For a slightly golden, lightly browned top, switch the oven to broil for the last 2–3 minutes—just watch it carefully so it doesn’t burn.

Step 7: Rest and Serve

Remove the casserole from the oven and allow it to rest for about 5 minutes before serving. This helps the layers set slightly and makes it easier to portion.

Serve it as-is for a low-carb option, or pair it with:

• Garlic bread
• Toasted sandwich rolls
• A crisp green salad
• Roasted potatoes

Tips for the Best Philly Cheese Steak Casserole

• Use quality beef: Thinly sliced ribeye gives the most authentic flavor.
• Don’t overcook the steak: If using sliced beef, quick cooking keeps it tender.
• Add mushrooms: Sautéed mushrooms make a delicious addition.
• Make it spicy: Add sliced jalapeños or a pinch of crushed red pepper.
• Prep ahead: You can assemble the casserole earlier in the day and bake it when ready.

Why You’ll Love This Dish

Philly Cheese Steak Casserole delivers all the rich, savory goodness of the classic sandwich but in a convenient, family-friendly format. It’s creamy, cheesy, and packed with bold flavor in every bite. Plus, it’s flexible—you can customize it with your favorite ingredients while still keeping that iconic cheesesteak taste.

Whether you’re cooking for a busy weeknight or looking for a comforting crowd-pleaser, this casserole is sure to become a repeat favorite in your kitchen.