There are few things more comforting than a bubbling, cheesy casserole pulled fresh from the oven. For those of us who love the rich, savory taste of a classic Philly cheesesteak but are mindful of carbs, this low carb Philly cheesesteak casserole is a game changer. It combines all the essential flavors of the traditional sandwich—tender steak, sweet bell peppers, caramelized onions, and gooey cheese—into a satisfying, keto-friendly casserole.
This recipe is one I created during a family gathering. We were reminiscing about road trips up the East Coast, stopping at hidden diners where the Philly cheesesteak reigned supreme. I was inspired to recreate that unforgettable taste in a low carb, family-style dish that would feed a crowd and please even the pickiest eaters. The result? A casserole that’s as hearty as it is healthy and one that my Italian-American grandmother would’ve loved for its simple ingredients and bold flavor.
Whether you’re meal prepping for the week, feeding a family of four, or simply craving a delicious dinner that won’t derail your diet, this recipe is your answer. It’s easy to make, versatile across seasons, and perfect for a cozy winter evening or a breezy summer dinner on the patio.
Why You’ll Love This Casserole
This recipe is ideal for low carb and keto lifestyles, but even those who aren’t cutting carbs will find it irresistible. It’s packed with protein, rich in flavor, and incredibly satisfying.
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No complicated ingredients or obscure diet foods—just real, whole ingredients.
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Great for busy weeknights. Prep it in advance and pop it in the oven after work.
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A perfect recipe to double if you’re meal-prepping or hosting guests.
Ingredients Breakdown
Each ingredient in this recipe contributes to the depth of flavor and texture that makes this dish so satisfying.
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Beef Steak: Choose ribeye or sirloin, thinly sliced for quick cooking. These cuts offer tenderness and flavor that mimics traditional cheesesteak meat.
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Bell Peppers and Onions: Sliced and sautéed until soft and slightly sweet, they are essential for the Philly flavor.
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Garlic: Just a bit adds depth without overpowering the other ingredients.
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Cream Cheese: This adds a rich, creamy base and binds the casserole together without the need for a flour-based sauce.
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Beef Broth and Worcestershire Sauce: These liquids bring umami and balance to the dish, enhancing the beef flavor.
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Cheese: A blend of shredded mozzarella and sliced provolone brings the melty, cheesy appeal. Provolone adds the signature cheesesteak flavor.
Ingredients List
For 4 servings:
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1 ½ pounds thinly sliced beef steak (ribeye or sirloin)
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2 tablespoons olive oil
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1 medium onion, thinly sliced
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1 green bell pepper, thinly sliced
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1 red bell pepper, thinly sliced
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2 garlic cloves, minced
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8 ounces cream cheese, softened
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½ cup beef broth
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1 tablespoon Worcestershire sauce
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1 teaspoon salt
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½ teaspoon black pepper
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1 teaspoon smoked paprika
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1 ½ cups shredded mozzarella cheese
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6 slices provolone cheese
Instructions
Step 1: Prepare the Vegetables
In a large skillet, heat olive oil over medium heat. Add the sliced onion and bell peppers. Sauté for about 5 to 7 minutes until the vegetables are soft and beginning to caramelize. Stir occasionally to prevent sticking. Add minced garlic and cook for an additional minute, just until fragrant. Remove the vegetables from the skillet and set aside.
Step 2: Sear the Beef
Using the same skillet, add a bit more oil if needed and increase the heat to medium-high. Add the thinly sliced beef in batches, cooking each batch for 2 to 3 minutes per side until browned. Avoid overcrowding the pan to ensure the meat sears rather than steams. Once cooked, remove from the skillet and set aside.
Step 3: Make the Creamy Sauce
Reduce the heat to low and add the softened cream cheese to the skillet. Stir gently until the cheese begins to melt. Pour in the beef broth and Worcestershire sauce. Add the salt, pepper, and smoked paprika. Stir until a smooth sauce forms. The beef broth should help thin the cream cheese and create a velvety texture.
Step 4: Combine and Transfer
Return the cooked vegetables and beef to the skillet, stirring until everything is evenly coated with the sauce. At this point, the mixture should be creamy, savory, and well blended. Transfer everything into a greased 9×13-inch baking dish, spreading the mixture out evenly.
Step 5: Add Cheese and Bake
Sprinkle the mozzarella cheese over the top of the beef mixture. Then, lay the slices of provolone across the top, covering as much surface area as possible. Place the baking dish in a preheated 375°F (190°C) oven. Bake for 15 to 18 minutes until the cheese is fully melted and slightly golden on top. For a crispier top layer, you can broil it for an additional 2 to 3 minutes at the end.
Step 6: Serve and Enjoy
Remove the casserole from the oven and let it sit for 5 minutes before serving. This rest time allows the flavors to meld and makes it easier to portion.
Serving Suggestions
This casserole is rich and hearty, making it perfect as a standalone dish. But if you’re looking to complete your meal, here are a few great low carb sides to pair with it:
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Cauliflower mash: A smooth, creamy alternative to mashed potatoes.
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Steamed broccoli or green beans: Light and nutritious.
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Mixed greens salad with vinaigrette: Adds a fresh contrast to the richness of the dish.
In the summer, you might opt for grilled vegetables or a cucumber-tomato salad. In the winter, a roasted Brussels sprout or asparagus dish would complement it beautifully.
Storage and Reheating Tips
One of the best parts of this casserole is how well it stores and reheats.
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Refrigerator: Store leftovers in an airtight container for up to 4 days.
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Freezer: Freeze individual portions or the entire casserole (cooled completely) wrapped tightly in plastic wrap and foil for up to 2 months.
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Reheat: Bake at 350°F for 15-20 minutes or microwave in 1-minute increments until heated through.
Variations and Substitutions
This recipe is flexible and can easily be customized to suit your taste or dietary needs.
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Add sliced mushrooms during the sauté step for more earthy flavor.
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Use ground beef instead of steak for a more budget-friendly option.
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Swap mozzarella for cheddar or Monterey Jack for a different cheese profile.
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Add a dash of hot sauce or red pepper flakes if you like a little heat.
Nutritional Information (Per Serving)
Approximate values:
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Calories: 520
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Protein: 38g
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Fat: 38g
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Carbohydrates: 6g
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Fiber: 1g
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Net Carbs: 5g
This makes it ideal for keto and low-carb diets.
Frequently Asked Questions
Can I make this casserole ahead of time?
Yes. Prepare the casserole up to the baking step and store it covered in the fridge for up to 24 hours. Bake when ready to serve.
Can I use chicken instead of beef?
Absolutely. Thinly sliced chicken breast works well and will still pair beautifully with the cheese and vegetables.
Is this recipe gluten-free?
Yes, all the ingredients listed are naturally gluten-free. Just double-check your Worcestershire sauce, as some brands may contain gluten.
Final Thoughts
This low carb Philly cheesesteak casserole is a wonderful blend of classic American comfort food and modern nutritional awareness. It delivers on flavor, texture, and satisfaction without any of the guilt. It’s the kind of recipe that becomes a regular in your rotation—not just because it’s low carb, but because it’s just that good.
Whether you’re staying true to a ketogenic lifestyle or simply looking to cut down on carbs, this dish proves you don’t have to sacrifice flavor. You’ll find it’s easy to make, even easier to enjoy, and almost impossible to mess up. It’s the kind of hearty meal that makes you feel good about what you’re eating.
Let me know in the comments if you’ve tried it, and feel free to share any twists you’ve added. Recipes like this one are made for sharing and customizing.
Print
Low Carb Philly Cheesesteak Casserole
- Total Time: 40 minutes
- Yield: 4 servings
Description
Details
Video URL
Nutrition
Ingredients
– 1 ½ lbs thinly sliced beef steak (ribeye or sirloin)
– 2 tbsp olive oil
– 1 medium onion, sliced
– 1 green bell pepper, sliced
– 1 red bell pepper, sliced
– 2 garlic cloves, minced
– 8 oz cream cheese, softened
– ½ cup beef broth
– 1 tbsp Worcestershire sauce
– 1 tsp salt
– ½ tsp black pepper
– 1 tsp smoked paprika
– 1 ½ cups shredded mozzarella cheese
– 6 slices provolone cheese
Instructions
1. Preheat oven to 375°F (190°C).
2. Sauté onions and peppers in olive oil until softened. Add garlic and cook for 1 more minute.
3. Brown steak slices on both sides, then set aside.
4. In the same skillet, melt cream cheese, then add broth, Worcestershire sauce, and spices.
5. Stir in the steak and vegetables, and transfer mixture to a greased 9×13-inch baking dish.
6. Top with mozzarella and provolone cheese.
7. Bake 15–18 minutes until bubbly and golden. Rest 5 minutes before serving.
Notes
Use ribeye for maximum flavor. For a lighter option, use sirloin or even ground beef. You can also add mushrooms or jalapeños for variety. Leftovers are even better the next day.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Category: Dinner
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1/4 of the dish
- Calories: 520 kcal
- Sugar: 3g
- Sodium: 880mg
- Fat: 38g
- Saturated Fat: 18g
- Unsaturated Fat: 16g
- Trans Fat: 1g
- Carbohydrates: 6g
- Fiber: 1g
- Protein: 38g
- Cholesterol: 120mg