Keto Philly Cheesesteak Casserole | Low Carb Yum

This easy keto philly cheesesteak casserole combines all the flavors of the classic comfort food without the carbs! It’s so delicious, you won’t even miss the bread roll.


What could be more delicious than shaved steak and sauteed veggies tossed in a creamy cheese sauce?

If that sounds great to you, then you have to try this casserole! The ingredient combination comes from a classic sub sandwich. However, by ditching the bread and turning it into a casserole, we eliminate most of the unnecessary carbs.

That means we get all the tasty flavors, but in a dish that’s completely low-carb.

If you’re looking for a hearty dinner you can throw together in about 10 minutes, give this philly cheesesteak casserole recipe a try.


This dish is very simple to make. We’ll cook the steak and veggies on the stove, melt the cheese sauce together, then mix all the ingredients in a baking dish and pop it in the oven!

  1. Cook the meat. Heat a skillet over medium high heat. Once hot, add olive oil and the shaved steak meat. Add steak seasoning, salt, and pepper to taste and saute until the meat is completely cooked through. Remove from the skillet and set aside.
  2. Sauté vegetables. Add the remaining olive oil to the skillet along with the onions and peppers. Season with salt and pepper to taste. Continue to cook until the veggies are just starting to become tender.
  3. Prepare cheese sauce. In a saucepan over medium heat, add the heavy whipping cream, cream cheese, and salt and pepper to taste. Continue to cook until the cream cheese melts and the sauce thickens. Add a shredded cheese into the sauce and stir to combine.
prepping ingredients
  1. Add main ingredients to casserole dish. Place the meat and veggies in a well greased 9×9 baking dish, then pour the cheese sauce on top.
assembling in baking pan
  1. Prepare for baking. Toss the meat, veggies, and cheese sauce until well-combined. Sprinkle the remaining shredded cheese on top.
topping off casserole
  1. Bake and cool slightly. Place the dish in the oven and bake at 350°F for 20 minutes, or until the cheese on top is slightly browned and bubbling. Remove from the oven and allow the cheesesteak casserole to cool for a few minutes.

If desired, you can top with freshly chopped parsley before serving. I like to divide the dish into 5 servings. At this size, there are 526 calories and 4 net carbs per slice.

keto philly cheesesteak casserole

Creating the Casserole

Philadelphians are very particular about what goes on a cheesesteak. The classic recipe is simply steak and cheese on a bread roll with optional onions.

By eliminating the bread to turn a sandwich into a casserole, I already made a major change to the traditional recipe. So I thought why not get a little creative.

I kept the classic onions but decided to add chopped bell peppers as well. They add great texture to this bake. I also chose to sprinkle some parsley on top for more flavor.

And finally, I wanted to make a cheese sauce instead of just melting cheese on top. A sauce means we can coat all of the ingredients in cheese, not just the top layer.

Philadelphians may be very rigid about their classic cheesesteak. But personally, I think there’s more than one way to make this delicious dish!

Recipe Variations 

There are a few other ingredients you could add to the dish if you like.

Mushrooms and banana peppers are both considered traditional toppings. They’re also low in carbs to keep your philly cheesesteak casserole keto friendly.

Personally, I love this dish as a hearty casserole. However, you could modify the recipe to make a more classic sandwich instead.

To do this, prep all the ingredients on the stove like usual. Then, instead of adding them to a baking dish, layer the ingredients onto coconut flour bread, almond flour bread, or any other low carb bread or wrap!

philly cheesesteak casserole keto

Other low carb casserole recipes

Looking for more keto casseroles that are easy to make and full of delicious flavor? Check out a few of these favorite recipes:

Easy low carb cheesesteak casserole

Steak, cheese, onions, and peppers are so delicious together. Combining them into a philly cheesesteak casserole is a great way to feed your family or meal prep for the week!

If you’ve been looking for a tasty new casserole recipe, make sure to try this low carb twist on a classic dish.


Keto Philly Cheesesteak Casserole

This easy dish has all the flavors of the classic cheesesteak sandwich. But there’s no bread added to keep it low-carb!

Prep Time10 mins

Cook Time40 mins

Total Time50 mins

Course: Main Course

Cuisine: American

Print Pin Review Recipe


  • Preheat the oven to 350 degrees.

  • In a skillet over medium high heat, add 1 tablespoon of the olive oil, and the shaved steak meat.

  • Sprinkle the steak seasoning and salt and pepper to taste over the meat, and saute it until it is completely cooked through. Remove from the skillet, and set aside.

  • Add the remaining tablespoon of olive oil to the skillet, and add in the onions and peppers.

  • Season the veggies with salt and pepper to taste, and cook until just starting to become tender.

  • In a saucepan over medium heat, add the heavy whipping cream, cream cheese and salt and pepper to taste. Continue to cook until the cream cheese melts, and the sauce thickens.

  • Stir ½ cup of the shredded cheese into the sauce, and mix to combine.

  • Place the meat and veggies in a well greased 9×9 baking dish, and pour the sauce over top, tossing to coat.

  • Sprinkle the remaining shredded cheese on top, and bake for 20 minutes, or until the cheese on top is slightly browned and bubbling.

  • Remove, let cook for a few minutes, top with freshly chopped parsley and serve.


Mushrooms and banana peppers can be added if desired. You can also spoon the casserole servings onto keto bread slices for a more traditional flavor combination.

Low Carb Sweeteners | Keto Sweetener Conversion Chart

low carb yum 5-ingredient keto


Calories: 526kcal | Carbohydrates: 5g | Protein: 26g | Fat: 45g | Saturated Fat: 23g | Cholesterol: 147mg | Sodium: 374mg | Potassium: 396mg | Fiber: 1g | Sugar: 2g | Vitamin A: 1525IU | Vitamin C: 32mg | Calcium: 217mg | Iron: 2mg

Additional Info

Net Carbs: 4 g | % Carbs: 3 % | % Protein: 19.8 % | % Fat: 77.1 %

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Note on Nutritional Information

Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar. Net carbs are the total carbs minus fiber.

Unauthorized use of this material without written permission from Lisa MarcAurele is strictly prohibited unless for personal offline purposes.
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