The Keto Philly Cheesesteak Casserole is the perfect blend of flavor and low-carb goodness, delivering the signature taste of a Philly cheesesteak without the bread. If you’re following a keto diet or simply trying to reduce carbs, this casserole will be your new favorite comfort food. Whether you crave the smoky flavor of seared beef, the softness of melted cheese, or the satisfying crunch of sautéed vegetables, this recipe has it all. It’s simple to make, incredibly tasty, and perfect for meal prepping or feeding a crowd.

What is Keto Philly Cheesesteak Casserole?
The Keto Philly Cheesesteak Casserole is a casserole version of the famous Philly cheesesteak sandwich, reimagined to fit a low-carb and keto lifestyle. Traditional Philly cheesesteaks are served in hoagie rolls, but this casserole swaps the bread for a delicious mix of ground beef (or thinly sliced steak), sautéed onions, bell peppers, mushrooms, and plenty of melted cheese. It’s packed with all the iconic flavors, making it a satisfying dish for anyone on a keto or low-carb diet.
The casserole is baked to perfection, and the combination of cream cheese and provolone adds an irresistible creamy texture. The casserole is also highly customizable, with several options for adding extra flavor or heat, such as jalapeños, pickled banana peppers, or heavy cream.
Origin of Keto Philly Cheesesteak Casserole
The Philly cheesesteak sandwich originated in Philadelphia, Pennsylvania, in the 1930s. Created by Pat and Harry Oliviero at Pat’s King of Steaks, the sandwich was a quick and easy meal made with thinly sliced beefsteak, sautéed onions, and melted cheese in a hoagie roll. Over the years, Philly cheesesteaks became a staple of American cuisine, especially in the northeastern United States.
The Keto Philly Cheesesteak Casserole brings that same delicious flavor profile into a low-carb form, perfect for those on the keto diet who miss the comforting, cheesy sandwich. By turning the classic into a casserole, this recipe is not only easier to prepare but also more versatile and adaptable to various dietary needs.
Ingredients (For 6 Servings)

Here’s everything you’ll need to make this mouthwatering Keto Philly Cheesesteak Casserole:
Main Ingredients:
- 1 ½ lbs ground beef (or thinly sliced steak for a more authentic flavor)
- 1 medium onion, sliced
- 1 green bell pepper, sliced
- 1 red bell pepper, sliced
- 8 oz mushrooms, sliced
- 3 cloves garlic, minced
- 1 tsp salt
- ½ tsp black pepper
- 1 tsp paprika (optional for extra flavor)
- 1 tbsp Worcestershire sauce (optional, check carbs)
- 4 oz cream cheese, softened
- 1 cup shredded provolone (or mozzarella for a different flavor)
- 6 slices provolone (for topping)
Optional Add-Ons:
- Jalapeños for heat
- Pickled banana peppers to top after baking
- Shaved steak for a more authentic taste
- ½ cup heavy cream for a creamy version of the casserole
Step-by-Step Directions and Preparation Method: Keto cheesesteak casserole
This recipe is simple and quick to prepare, perfect for a busy weeknight dinner or a meal prep session.
1. Preheat the Oven
Start by preheating your oven to 375°F (190°C) to get it ready for baking.
2. Cook the Meat
In a large skillet, heat a bit of oil over medium heat. Add the ground beef (or thinly sliced steak if you prefer a more authentic taste) and cook until browned. Make sure to drain any excess fat from the meat to keep the casserole from becoming greasy.
3. Cook the Vegetables
Next, add the sliced onion, bell peppers, and mushrooms to the skillet. Sauté the vegetables for 5–7 minutes until they’re softened and slightly caramelized. Add the minced garlic and continue to cook for another minute to bring out its fragrance.
4. Season and Combine
Season the mixture with salt, pepper, and paprika (if using). Stir in the Worcestershire sauce for an added depth of flavor. Then, add the cream cheese and stir until it melts and creates a smooth, creamy mixture. This adds a rich base to the casserole and helps bind all the ingredients together.
5. Add Cheese and Transfer to Baking Dish
Once the cream cheese has melted into the beef and veggie mixture, stir in the shredded provolone or mozzarella cheese. Mix well until everything is evenly combined and the cheese is starting to melt. Transfer the entire mixture into a casserole dish. Top with the 6 slices of provolone cheese to form a beautiful, cheesy crust when baked.
6. Bake the Casserole
Bake the casserole in the preheated oven for 15–18 minutes, or until the cheese is bubbly and starting to brown. The result is a golden, cheesy top and a savory, flavorful filling that’s both comforting and low-carb.
Nutrition (Approx. per Serving)
- Calories: ~380
- Net Carbs: 4–6g
- Protein: 27g
- Fat: 28g
This recipe is rich in healthy fats and protein, making it an ideal meal for anyone on the keto diet. It’s filling and satisfying without spiking your blood sugar, and it’s also incredibly low in carbs, making it perfect for those looking to stay within their daily carb limits.
Variations of the Keto Philly Cheesesteak Casserole
This Keto Philly Cheesesteak Casserole is incredibly versatile, allowing for several variations to suit different tastes or dietary preferences. Here are a few ideas to personalize your casserole:
1. Add Heat with Jalapeños
If you like a bit of spice, add some jalapeños to the skillet with the vegetables. They’ll provide a nice kick and balance the richness of the cheese and meat.
2. Pickled Banana Peppers
Top the casserole with pickled banana peppers after it’s baked to add a tangy, vinegary bite that contrasts nicely with the creamy and savory filling.
3. Shaved Steak for Authenticity
For a more traditional Philly cheesesteak flavor, substitute the ground beef with shaved steak. This will provide a chewier, steak-like texture that’s closer to the original sandwich.
4. Make It Extra Creamy
For an even creamier texture, add ½ cup of heavy cream to the skillet when mixing in the cream cheese. This will give the casserole a more velvety consistency and make it even more indulgent.
FAQs About Keto Philly Cheesesteak Casserole
1. Can I make this Keto Philly Cheesesteak Casserole ahead of time?
Yes, you can prepare this casserole ahead of time. Simply assemble the casserole, cover it, and store it in the fridge for up to 24 hours. When you’re ready to bake, just pop it in the oven and bake as directed.
2. Can I use a different type of cheese?
Absolutely! While provolone and mozzarella are traditional for Philly cheesesteaks, you can use other cheeses like cheddar, Monterey Jack, or Swiss if you prefer. Just make sure the cheese you choose melts well.
3. Can I use chicken instead of beef?
Yes, you can substitute the ground beef or steak with chicken for a lighter version of this casserole. Just make sure to cook the chicken thoroughly before adding it to the casserole.
4. Is Keto Philly Cheesesteak Casserole good for meal prep?
Yes, this casserole is perfect for meal prepping! It stores well in the fridge for up to 3 days, and you can easily reheat it in the microwave or oven. It also freezes well if you want to save some for later.
Conclusion: Keto Philly Cheesesteak Casserole
The Keto Philly Cheesesteak Casserole is a fantastic low-carb, keto-friendly version of the classic Philly cheesesteak sandwich. It combines all the rich flavors of the original—ground beef (or steak), sautéed veggies, and melted cheese—into a comforting, cheesy casserole that’s satisfying without the carbs. With the flexibility to add your favorite ingredients and make it your own, this recipe is perfect for meal prep, a weeknight dinner, or even feeding a crowd.
Whether you enjoy a little heat from jalapeños, the tanginess of pickled banana peppers, or the extra creaminess of heavy cream, this casserole can be customized to suit your tastes. It’s easy to make, rich in flavor, and sure to become a staple in your keto recipe collection. So, next time you’re craving a Philly cheesesteak, skip the bread and dive into this delicious, low-carb alternative!
