Keto Low-Carb Philly Cheese Steak Casserole

Indulge in the savory goodness of a classic Philly Cheese Steak transformed into a keto-friendly delight with our “Keto Low-Carb Philly Cheese Steak Casserole” recipe. This mouthwatering casserole is a wholesome blend of tender beef, sautéed peppers, onions, and a generous amount of melted cheese. Not only is it low in carbs, but it’s also easy to prepare, making it a perfect choice for a hearty and satisfying dinner. Get ready to savor the flavors of a beloved sandwich in a convenient and keto-approved casserole that the whole family will love!

Keto Low-Carb Philly Cheese Steak Casserole

Preparation Time: 15 minutes

Cooking Time: 35 minutes

Serves: 6

Difficulty: Easy

Course: Main Course

Cuisine: American

kcal: Approximately 320 kcal per serving


  • 1.5 lbs thinly sliced beef (sirloin or ribeye), cut into strips
  • 1 green bell pepper, thinly sliced
  • 1 red bell pepper, thinly sliced
  • 1 medium onion, thinly sliced
  • 3 tablespoons olive oil, divided
  • 1 tablespoon Worcestershire sauce
  • 2 tablespoons low-sodium soy sauce or tamari for gluten-free option
  • 1 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • 1/2 teaspoon dried oregano
  • 1/2 teaspoon dried thyme
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon salt
  • 2 cups shredded provolone or mozzarella cheese, divided
  • 1/4 cup grated Parmesan cheese
  • Optional: Sliced jalapeños or crushed red pepper flakes for added heat
  • Optional: Chopped fresh parsley for garnish


  1. Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish with non-stick cooking spray or olive oil.
  2. In a large skillet, heat 2 tablespoons of olive oil over medium-high heat.
  3. Add the thinly sliced beef to the hot skillet and cook for 2-3 minutes, or until the beef is browned and cooked to your desired level of doneness. Remove the beef from the skillet and set it aside.
  4. In the same skillet, add the remaining tablespoon of olive oil and sauté the thinly sliced green and red bell peppers, along with the sliced onions. Cook for 4-5 minutes, or until the vegetables are tender.
  5. Return the cooked beef to the skillet with the sautéed peppers and onions.
  6. In a small bowl, whisk together the Worcestershire sauce, low-sodium soy sauce, garlic powder, onion powder, dried oregano, dried thyme, black pepper, and salt. Pour the sauce over the beef and vegetables in the skillet and toss everything together until well coated.
  7. Optional: For an added kick of heat, you can add sliced jalapeños or crushed red pepper flakes to the mixture.
  8. Transfer the beef and vegetable mixture to the greased baking dish, spreading it out in an even layer.
  9. Sprinkle 1 cup of shredded provolone or mozzarella cheese evenly over the top of the beef and vegetables.
  10. Top the casserole with grated Parmesan cheese.
  11. Add the remaining cup of shredded provolone or mozzarella cheese on top of the Parmesan cheese, creating a cheesy layer.
  12. Bake the Keto Low-Carb Philly Cheese Steak Casserole in the preheated oven for approximately 20 minutes, or until the cheese is melted, bubbly, and lightly golden brown on top.
  13. Once the casserole is fully cooked, remove it from the oven and let it cool slightly.

Note: Feel free to add other keto-friendly vegetables like mushrooms or zucchini to the casserole for extra nutrients and flavors.

Nutrition Facts:

  • Serving Size: 1 serving of Keto Low-Carb Philly Cheese Steak Casserole
  • Calories: Approximately 320 kcal
  • Total Fat: 21g
  • Saturated Fat: 8g
  • Cholesterol: 75mg
  • Sodium: 550mg
  • Total Carbohydrates: 7g
  • Dietary Fiber: 2g
  • Sugars: 4g
  • Protein: 26g

Enjoy the delicious blend of tender beef, sautéed peppers, onions, and melted cheese with our Keto Low-Carb Philly Cheese Steak Casserole. This keto-approved version of a classic Philly Cheese Steak is not only satisfying but also incredibly easy to make. Whether you’re following a low-carb diet or simply looking for a hearty and flavorful dinner option, this casserole is sure to become a go-to favorite. So, gather your ingredients, preheat your oven, and get ready to enjoy a comforting and cheesy meal that will leave your taste buds wanting more!


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