Philly Cheesesteak Casserole

Introduction

Imagine the irresistible flavors of a classic Philly Cheesesteak sandwich – the savory, thinly sliced steak, the sweet caramelized onions and peppers, and that gloriously melty, gooey cheese – all transformed into a comforting, easy-to-eat casserole. That’s exactly what you get with this incredible Philly Cheesesteak Casserole! It takes everything you love about the iconic sandwich and bakes it into a hearty, family-friendly dish that’s perfect for a weeknight dinner or a crowd-pleasing potluck. Forget the messy hoagie rolls; this casserole delivers all the deliciousness in a single, satisfying scoop.

This recipe is a true comfort food hero. It’s a fantastic way to enjoy those beloved Philly Cheesesteak flavors without the fuss of individual sandwiches, making it an ideal choice for busy evenings. Plus, it’s incredibly versatile and can be customized to fit various dietary needs, including low-carb and keto options. We’ll walk you through sautéing vibrant bell peppers, onions, and mushrooms until tender-crisp, browning savory ground beef, and then layering it all with a rich, creamy cheese sauce, baked to bubbly, golden perfection. Get ready to dive into a dish that’s sure to become a new family favorite!

Whether you’re craving a taste of Philadelphia or simply looking for an effortless yet incredibly flavorful meal, this Philly Cheesesteak Casserole is your answer. It combines simple ingredients with straightforward steps to create a dish that’s both hearty and satisfying. The result is a casserole brimming with tender meat, perfectly cooked vegetables, and an abundance of melted cheese that will have everyone asking for seconds. It’s a one-pan (or almost one-pan) wonder that promises a delicious, stress-free dinner experience.

Nutritional Information

Per serving (approximate values):

• Calories: 485 kcal
• Protein: 35g
• Carbohydrates: 15g
• Fat: 30g
• Fiber: 3g
• Sodium: 680mg

Ingredients

• 2 tablespoons olive oil, divided
• 1.5 pounds lean ground beef (85/15 or 90/10)
• 1 large yellow onion, thinly sliced
• 1 large green bell pepper, thinly sliced
• 1 large red bell pepper, thinly sliced
• 1 large orange bell pepper, thinly sliced
• 8 ounces cremini mushrooms, thinly sliced
• 2 cloves garlic, minced
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1/2 teaspoon black pepper
• 1/2 teaspoon salt
• 1 tablespoon Worcestershire sauce
• 1/4 cup cream cheese, softened
• 1/2 cup heavy cream
• 1/2 cup beef broth
• 1 cup shredded provolone cheese, divided
• 1/2 cup shredded Monterey Jack cheese
• 1/4 cup grated Parmesan cheese
• Optional: Fresh parsley, chopped, for garnish

Instructions

1. Preheat your oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish.
2. Heat 1 tablespoon of olive oil in a large skillet or Dutch oven over medium-high heat. Add the ground beef and cook, breaking it apart with a spoon, until fully browned. Drain any excess fat.
3. Season the cooked ground beef with 1/2 teaspoon garlic powder, 1/2 teaspoon onion powder, 1/4 teaspoon black pepper, and 1/4 teaspoon salt. Stir in the Worcestershire sauce. Remove the beef from the skillet and set aside in a bowl.
4. Add the remaining 1 tablespoon of olive oil to the same skillet over medium heat. Add the sliced yellow onion, green bell pepper, red bell pepper, orange bell pepper, and mushrooms. Sauté for 8-10 minutes, stirring occasionally, until the vegetables are tender-crisp and the onions are slightly caramelized.
5. Add the minced garlic to the vegetables and cook for another minute until fragrant. Season the vegetables with the remaining 1/2 teaspoon garlic powder, 1/2 teaspoon onion powder, 1/4 teaspoon black pepper, and 1/4 teaspoon salt.
6. In a separate medium saucepan, combine the softened cream cheese, heavy cream, and beef broth. Heat over medium-low heat, whisking constantly, until the cream cheese is fully melted and the sauce is smooth and slightly thickened.
7. Stir in 1/2 cup of the shredded provolone cheese and all of the Monterey Jack cheese into the cream cheese mixture until melted and well combined. This will form your creamy cheese sauce.
8. Spread the seasoned ground beef evenly across the bottom of the prepared 9×13 inch baking dish.
9. Pour half of the creamy cheese sauce over the ground beef layer.
10. Evenly spread the sautéed vegetable mixture over the cheese sauce.
11. Pour the remaining half of the creamy cheese sauce over the vegetables.
12. Sprinkle the remaining 1/2 cup of shredded provolone cheese and the grated Parmesan cheese evenly over the top of the casserole.
13. Bake for 20-25 minutes, or until the casserole is bubbly around the edges and the cheese on top is melted and lightly golden brown.
14. If desired, for an extra golden and bubbly top, you can carefully broil for the last 1-2 minutes, watching closely to prevent burning.
15. Remove the casserole from the oven and let it rest for 5-10 minutes before serving. This allows the casserole to set and makes it easier to scoop.
16. Garnish with fresh chopped parsley, if using, and serve hot.

Cooking Tips and Variations

To achieve the absolute best Philly Cheesesteak Casserole, pay attention to a few key details. First, when browning your ground beef, ensure you drain off as much fat as possible. This prevents your casserole from becoming greasy. If you prefer a more traditional “Philly” meat texture, you can opt for thinly shaved steak (like ribeye or sirloin) instead of ground beef. Simply sear it quickly in batches in the skillet before setting aside. For the vegetables, don’t overcook them; you want them tender-crisp to provide a nice textural contrast to the soft meat and cheese. Slicing them uniformly will ensure they cook evenly.

The cheese is paramount in any Philly Cheesesteak. While our recipe uses a creamy sauce with provolone and Monterey Jack for ultimate melty goodness, you can certainly experiment. For an even more authentic taste, consider adding a few slices of white American cheese to the sauce or layering them on top. Some adventurous cooks even like a touch of Cheez Whiz for that iconic, albeit less traditional, Philly flavor. If you’re going for a low-carb or keto version, this casserole is already quite friendly; just ensure your Worcestershire sauce is sugar-free or omit it if you’re strict. Serve this hearty casserole as is, or with a crisp side salad to balance the richness. For those not adhering to low-carb, a crusty baguette or garlic bread is perfect for scooping up every last bit of cheesy goodness.

Variations:

• Spicy Kick: For a touch of heat, add a diced jalapeño or a pinch of red pepper flakes to the vegetables as they sauté.
• Mushroom Lovers: Double the amount of mushrooms for an earthier flavor profile.
• Different Cheeses: Experiment with other melty cheeses like Gruyère, fontina, or even a sharp white cheddar in your cheese sauce or as a topping.
• Crunchy Topping: Before baking, sprinkle a handful of crushed pork rinds (for low-carb) or plain breadcrumbs mixed with a little melted butter over the top for an added crunchy texture.
• Smoked Paprika: A dash of smoked paprika in the meat seasoning can add a subtle smoky depth.

Storage and Reheating

This Philly Cheesesteak Casserole makes for fantastic leftovers, often tasting even better the next day as the flavors meld. To store, allow the casserole to cool completely to room temperature. Once cooled, cover the baking dish tightly with plastic wrap or aluminum foil, or transfer individual portions to airtight containers. The casserole can be stored in the refrigerator for up to 3-4 days.

For reheating, individual portions can be warmed in the microwave. Place a serving in a microwave-safe dish, cover loosely, and heat on high for 1-2 minutes, or until heated through. For reheating the entire casserole, preheat your oven to 350°F (175°C). Cover the baking dish with foil to prevent drying out and bake for 20-30 minutes, or until heated through and bubbly. If you prefer a crispier top, remove the foil for the last 5-10 minutes of baking. Avoid reheating multiple times to maintain quality and safety.

Frequently Asked Questions

Can I use shaved steak instead of ground beef?

Absolutely! Using thinly shaved steak, like ribeye or sirloin, will give you an even more authentic Philly Cheesesteak experience. Simply sear the shaved steak in batches in a hot skillet with a little oil until just browned, then remove and proceed with the recipe. This method often requires a bit more care to avoid overcooking the steak, but the flavor payoff is excellent.

Is this casserole freezer-friendly?

Yes, this casserole can be frozen! To freeze, allow the cooked and cooled casserole to set completely. You can freeze it whole in the baking dish (if it’s freezer-safe and well-covered with foil and plastic wrap) or portion it into individual freezer-safe containers. It will keep in the freezer for up to 2-3 months. Thaw overnight in the refrigerator before reheating in the oven as directed above, adding extra baking time if needed.

What can I serve with this casserole?

This Philly Cheesesteak Casserole is a hearty meal on its own, but it pairs wonderfully with a few simple sides. For a traditional touch, you can serve it with crusty bread or garlic bread to scoop up the rich sauce. For a lighter meal, a simple green salad with a vinaigrette dressing provides a refreshing contrast. Steamed green beans, roasted asparagus, or a side of mashed potatoes also complement the flavors beautifully.

How can I make this casserole lower in carbs?

This recipe is already quite low-carb friendly. To further reduce the carb count, ensure you’re using a low-carb Worcestershire sauce or omit it. The main carbohydrates come from the vegetables, which are relatively low. To keep it strictly keto, ensure any broth or seasonings used are sugar-free. Avoid serving with bread or carby sides, and instead opt for more non-starchy vegetables like a side salad or steamed broccoli.