As I rummaged through my fridge one evening, a surprising discovery caught my eye: those leftover bell peppers and a pound of ground beef begging for a creative rescue. Thus, the journey to crafting my Low Carb Philly Cheesesteak Casserole began! This dish brings all the comforting flavors of a classic Philly cheesesteak without the carbs, ensuring all my low-carb and keto friends can dive into its cheesy goodness guilt-free. With tender beef, colorful peppers, and a creamy base, this casserole is not only a quick prep hero for busy weeknights but also a crowd-pleasing dish that everyone will love. So, who’s ready to whip up some deliciousness that warms both the heart and the belly?

Why not skip the carbs?
Cheesy Comfort: Enjoy the rich, creamy taste of a Philly cheesesteak without the guilt of carbs—perfect for low-carb and keto diets! Easy Preparation: With just a few steps, you’ll have this delicious casserole ready in no time, making it ideal for those hectic weeknights. Crowd-Pleasing Appeal: Family and friends will rave about this dish, especially paired with a refreshing green salad. Versatile Options: Feel free to customize with veggies like mushrooms or swap proteins; it’s a dish that invites creativity. Flavor Explosion: Garlic, Worcestershire sauce, and melted cheeses create an irresistible experience in every bite. Dive into this satisfying casserole, and say goodbye to boring meals like fast food!
Philly Cheesesteak Casserole Ingredients
• Dive into the cheesy goodness!
For the Casserole
• Ground Beef – Rich in flavor and a great source of protein; lean ground beef works well for a lighter option.
• Large Onion – Adds a sweet depth to the dish; shallots or green onions make excellent substitutes.
• Large Bell Peppers – Colorful, crunchy, and nutritious; mix different colors for visual appeal.
• Garlic – Freshly minced garlic enhances the aroma; garlic powder is a quick alternative.
• Cream Cheese – Provides a creamy texture that binds the ingredients; low-fat cream cheese can reduce calories if desired.
• Worcestershire Sauce – Adds savory umami to elevate the flavor; soy sauce can be used as a delicious alternative.
• Salt and Pepper – Essential for seasoning; adjust to taste, and always taste your mixture for balance first.
• Provolone Cheese – Melts beautifully for that classic cheesesteak flavor; mozzarella or another mild cheese can substitute.
• Shredded Mozzarella – Creates a delightful gooey topping; swap it for cheddar if you prefer a sharper flavor.
• Olive Oil – Ideal for sautéing the vegetables; avocado oil can also serve the purpose well.
Step‑by‑Step Instructions for Low Carb Philly Cheesesteak Casserole Recipe
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). While it heats, take a moment to prepare a 9×13-inch baking dish by spraying it with non-stick cooking spray. This will ensure an easy release of your casserole once it’s baked, allowing you to serve the Low Carb Philly Cheesesteak Casserole effortlessly.
Step 2: Sauté the Vegetables
In a large skillet, heat 2 tablespoons of olive oil over medium heat. Add in the diced onion and bell peppers, sautéing them for about 5-6 minutes until they’re softened and fragrant. Stir in minced garlic and cook for an additional 30 seconds, ensuring the flavors meld together beautifully, providing a solid foundation for your casserole.
Step 3: Brown the Beef
Next, add the ground beef to the skillet with the sautéed vegetables. Season with salt and pepper, breaking the meat apart as it cooks for about 7-8 minutes, or until browned and no longer pink. As the meat cooks, stir in the Worcestershire sauce, which adds a savory depth to the Low Carb Philly Cheesesteak Casserole, perfectly complementing the beef.
Step 4: Creamy Mixture
Lower the heat and mix in the softened cream cheese until completely melted and creamy. This will create a luscious texture, binding the beef and vegetables together. Stir thoroughly for about 2-3 minutes, ensuring that every bite of the Low Carb Philly Cheesesteak Casserole is rich and savory, with no clumps of cream cheese left.
Step 5: Assemble the Casserole
Transfer the beef mixture into your prepared baking dish, spreading it evenly across the bottom. Layer slices of provolone cheese generously over the meat, allowing for that classic cheesesteak flavor. To finish, sprinkle a generous amount of shredded mozzarella on top, ensuring every inch is covered for a beautifully gooey finish.
Step 6: Bake to Perfection
Place the casserole in the preheated oven and bake for 20-25 minutes, or until the cheese is bubbly and golden brown. This visual cue indicates that it’s time to take your Low Carb Philly Cheesesteak Casserole out of the oven, filling your kitchen with mouthwatering aromas that are sure to make everyone hungry.
Step 7: Cool and Serve
Once baked, let the casserole rest for about 5 minutes before serving. This brief resting period helps everything set, making it easier to cut into portions. Serve warm, and bask in the compliments as your family and friends enjoy this delightful Low Carb Philly Cheesesteak Casserole, packed with flavor and comfort!

Make Ahead Options
These Low Carb Philly Cheesesteak Casserole preparations are perfect for busy home cooks looking to save time during the week! You can prep the beef and vegetable mixture up to 24 hours in advance—just sauté the onions, peppers, and garlic as instructed, then add the browned ground beef and Worcestershire sauce. Once cooled, store the mixture in an airtight container in the refrigerator. To maintain quality, keep the cheese separate until you’re ready to assemble and bake. When it’s time to serve, just spread the mixture in the baking dish, top with cheese, and bake at 350°F (175°C) for 20-25 minutes. Your comforting Philly Cheesesteak Casserole will be just as delicious!
Expert Tips for Low Carb Philly Cheesesteak Casserole
- Cream Cheese Prep: Ensure the cream cheese is fully softened before mixing it in; this creates a smooth texture that binds the casserole ingredients well.
- Avoid Overcooking: Monitor the sautéing of vegetables closely to prevent them from becoming mushy; they should add texture and flavor to your casserole.
- Season to Taste: Don’t forget to taste your beef mixture before transferring it to the baking dish; adjust the salt and pepper to enhance the overall flavor in your Low Carb Philly Cheesesteak Casserole.
- Rest Before Serving: Allow the casserole to rest for about 5 minutes after baking; this helps it set, making it easier to serve and enjoy.
- Customize with Veggies: Feel free to add in your favorite vegetables like spinach or mushrooms; this not only boosts nutrition but also adds your personal touch to the casserole.
Storage Tips for Philly Cheesesteak Casserole
- Fridge: Store leftover Philly Cheesesteak Casserole in an airtight container for up to 4 days. Make sure it’s properly covered to maintain freshness.
- Freezer: For longer storage, freeze portions in freezer-safe containers for up to 3 months. Label them with the date for easy tracking.
- Reheating: Reheat in the microwave for 2-3 minutes or bake in the oven at 350°F (175°C) for about 15 minutes until heated through. Keep it covered to retain moisture.
- Room Temperature: Avoid leaving the casserole at room temperature for more than 2 hours to prevent spoilage.
What to Serve with Low Carb Philly Cheesesteak Casserole
Elevate your dinner experience with delightful side dishes that beautifully complement this cheesy casserole.
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Crisp Green Salad: A fresh salad with mixed greens provides a refreshing contrast, balancing the rich flavors of the casserole. Add a zesty vinaigrette for a bright touch.
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Garlic Breadsticks: Soft, warm breadsticks brushed with garlic butter complement the casserole’s flavor profile perfectly. For a low-carb option, try gluten-free or cauliflower breadsticks instead.
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Steamed Broccoli: A nutrient-packed side, the mild bitterness of steamed broccoli contrasts nicely with the creamy richness of the casserole. Drizzle with a bit of lemon juice for extra brightness.
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Coleslaw: A crunchy coleslaw adds a nice crunch to your meal, and the creamy dressing enhances the overall comfort aspect of the dinner. Choose a vinegar-based version for a tangy kick!
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Roasted Brussels Sprouts: Caramelized Brussels sprouts bring out sweet and savory flavors that align beautifully with the hearty casserole. Toss with olive oil, salt, and pepper before roasting.
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Red Wine: A glass of red wine, like a smooth Cabernet Sauvignon, pairs wonderfully with the flavors in the casserole, enhancing your dining experience.
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Chocolate Mousse: For a sweet finish, indulge in a light chocolate mousse. Its airy texture and rich taste will round off your meal delightfully, making every bite memorable.
Philly Cheesesteak Casserole Variations
Feel free to let your creativity shine as you personalize this delicious casserole!
- Lean Option: Substitute ground turkey or chicken for a lighter protein choice without sacrificing flavor.
- Veggie Boost: Add sautéed mushrooms or fresh spinach for an extra layer of nutrition and taste. Consider throwing in a handful of diced zucchini—it’s a great way to sneak in more veggies!
- Dairy-Free Delight: Use dairy-free cream cheese and cheese alternatives to make the casserole friendly for those avoiding dairy. It’s surprising how creamy and delicious it can still be!
- Spicy Kick: Mix in diced jalapeños or a splash of hot sauce for a fiery twist that elevates the flavor profile beautifully. Just remember to adjust the amount to your heat preference!
- Italian Flare: Add Italian seasoning or a pinch of red pepper flakes to infuse the dish with an unexpected zesty charm. This small addition can take your comfort food to the next level!
- Cheese Swap: Change provolone for sharp cheddar or pepper jack for a different cheese experience—bursting with flavor to set your casserole apart!
- Cauliflower Base: Swap out the ground beef with seasoned ground cauliflower for a low-carb veggie-filled alternative. It balances texture and flavor while keeping it light!
- Crusty Topping: Top your casserole with crushed pork rinds or almond flour for a delightful crunchy texture. Just sprinkle these on during the last few minutes of baking for the perfect crisp finish!
If you’re looking for other comforting dishes, be sure to check out my Cheesy Hamburger Casserole or a delightful Chicken Parmesan Casserole that are sure to delight your family just as much!

Low Carb Philly Cheesesteak Casserole Recipe FAQs
What type of ground beef should I use for the casserole?
I recommend using lean ground beef for a healthier option. It provides rich flavor while reducing grease. If you’re looking for an even leaner choice, ground turkey or chicken works great too!
How should I store leftovers of the casserole?
Store leftover Low Carb Philly Cheesesteak Casserole in an airtight container in the refrigerator for up to 4 days. Make sure it’s covered well to maintain its freshness and flavor.
Can this casserole be frozen for later use?
Absolutely! For longer storage, freeze portions of the casserole in freezer-safe containers for up to 3 months. Just be sure to label them with the date. When ready to enjoy, thaw overnight in the fridge before reheating.
What should I do if the cream cheese isn’t blending smoothly?
If the cream cheese isn’t blending smoothly, make sure it’s fully softened before adding it to the mixture. If it’s still clumpy, you can use a hand mixer to blend until creamy—just be patient! This ensures a luscious, uniform texture.
Are there any dietary considerations for allergies?
Yes! If you or someone you’re serving has dairy allergies, feel free to use dairy-free cream cheese and cheese alternatives. Additionally, if there are any concerns regarding gluten, ensure all sauces and ingredients are certified gluten-free.

Easy Philly Cheesesteak Casserole Recipe for Cheesy Comfort
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and prepare a 9x13-inch baking dish with non-stick cooking spray.
- In a large skillet, heat olive oil over medium heat. Add diced onion and bell peppers, sauté for 5-6 minutes until softened. Stir in minced garlic and cook for 30 more seconds.
- Add ground beef to the skillet. Season with salt and pepper, cooking for about 7-8 minutes until browned. Stir in Worcestershire sauce.
- Lower the heat and mix in softened cream cheese until melted and creamy.
- Transfer the beef mixture into the baking dish, layer with provolone cheese, then sprinkle shredded mozzarella on top.
- Place in the oven and bake for 20-25 minutes until cheese is bubbly and golden brown.
- Let casserole rest for about 5 minutes before serving.

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