Cheesy Philly Steak Casserole
If you love the bold, savory flavors of a classic Philly cheesesteak, this Cheesy Philly Steak Casserole is about to become your new favorite comfort food. It takes everything you love about the iconic sandwich—juicy beef, sautéed peppers and onions, and plenty of melted cheese—and transforms it into a rich, oven-baked casserole that’s easy to make and incredibly satisfying.
This recipe is perfect for busy weeknight dinners, casual family meals, or even meal prep. It’s low-carb, naturally gluten-free, and loaded with flavor, making it a crowd-pleaser for just about everyone.
Why You’ll Love This Philly Cheesesteak Casserole
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All the flavor, no bread required
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One-pan comfort food that’s filling and hearty
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Low-carb and keto-friendly
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Easy to customize with your favorite veggies or cheese
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Great for leftovers and reheating
Unlike a traditional sandwich, this casserole delivers a creamy, cheesy texture with every bite—no soggy bread, no mess, just pure comfort.
What Is Philly Cheesesteak Casserole?
A Philly cheesesteak casserole is a baked dish inspired by the famous Philadelphia sandwich. Instead of serving beef and cheese inside a roll, everything is layered and baked together in a casserole dish. The result is a rich, creamy, and deeply savory meal that captures the essence of a cheesesteak while offering the convenience of a one-dish dinner.
This version uses cream cheese, eggs, and shredded cheese to create a smooth, custard-like base that binds the beef and vegetables together beautifully.
Ingredients You’ll Need
Main Ingredients:
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1½ lbs ground beef or shaved steak
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1 medium onion, diced
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1 green bell pepper, diced
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1 red bell pepper, diced
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8 oz mushrooms, sliced
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2 cloves garlic, minced
Seasonings:
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1 teaspoon salt
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½ teaspoon black pepper
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½ teaspoon smoked paprika (optional)
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1 tablespoon Worcestershire sauce
Creamy Base:
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8 oz cream cheese, softened
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½ cup mayonnaise
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2 large eggs
Cheese Topping:
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1 cup shredded provolone cheese
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1 cup shredded mozzarella cheese
How to Make Cheesy Philly Steak Casserole
Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish with oil or butter and set it aside.
Step 2: Cook the Beef
Heat a large skillet over medium-high heat. Add the ground beef or shaved steak and cook until fully browned. Break it apart as it cooks.
Once done, drain any excess fat to prevent the casserole from becoming greasy.
Step 3: Sauté the Vegetables
Add the diced onion, bell peppers, mushrooms, and garlic to the skillet with the beef.
Cook for 5–6 minutes, stirring occasionally, until the vegetables are soft and fragrant.
Season with salt, black pepper, smoked paprika, and Worcestershire sauce. Mix well to evenly coat the beef and vegetables.
Step 4: Transfer to Baking Dish
Spread the beef and vegetable mixture evenly into the prepared baking dish.
Step 5: Make the Creamy Mixture
In a medium bowl, whisk together the cream cheese, mayonnaise, and eggs until smooth and fully combined.
Make sure the cream cheese is softened to avoid lumps.
Step 6: Assemble the Casserole
Pour the creamy mixture evenly over the beef and vegetables.
Sprinkle the provolone and mozzarella cheese evenly on top.
Step 7: Bake
Place the casserole in the preheated oven and bake for 25–30 minutes, or until the cheese is melted, golden, and bubbly around the edges.
Step 8: Rest and Serve
Remove the casserole from the oven and let it rest for 5 minutes before serving. This helps the layers set and makes slicing easier.
Serving Suggestions
This Cheesy Philly Steak Casserole is delicious on its own, but you can also serve it with:
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A fresh green salad
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Roasted vegetables
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Garlic bread or dinner rolls (for non-keto eaters)
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Toasted hoagie rolls for a sandwich-style plate
Tips for the Best Philly Cheesesteak Casserole
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Use quality beef for the best flavor
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Soften cream cheese before mixing for a smooth texture
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Don’t skip resting time after baking
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Provolone adds authentic Philly flavor, but Swiss or cheddar also work
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Add jalapeños or red pepper flakes for heat
Storage and Reheating
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Refrigerator: Store leftovers in an airtight container for up to 4 days
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Reheating: Warm in the oven at 350°F or microwave in short intervals
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Freezing: Can be frozen for up to 2 months (best without cheese topping added before freezing)
Frequently Asked Questions
Is Philly Cheesesteak Casserole keto-friendly?
Yes! This recipe is naturally low-carb and keto-approved.
Can I use chicken instead of beef?
Absolutely. Thinly sliced chicken breast or ground chicken works well.
Can I make it ahead of time?
Yes. Assemble the casserole, cover, refrigerate, and bake when ready.
Final Thoughts
This Cheesy Philly Steak Casserole delivers everything you love about a classic cheesesteak in an easy, oven-baked form. It’s creamy, cheesy, hearty, and packed with flavor—perfect for weeknight dinners, meal prep, or feeding a hungry family.
Once you try it, this casserole is guaranteed to earn a permanent spot in your recipe rotation.
