Cheesy Low Carb Philly Cheesesteak Casserole is the ultimate comfort bake that gives you all the gooey, tender steak and cheese flavors you crave—without the extra carbs. This dish layers savory sirloin and sautéed peppers over a bed of cauliflower rice, then blankets everything in melted mozzarella and provolone. Whether you’re feeding a crowd or just treating yourself to an easy weeknight dinner, this casserole is here to satisfy your cheesy cravings.
Key Ingredients
Start your Cheesey Low Carb Philly Cheesesteak Casserole strong with these flavorful components:
- 1 lb cauliflower rice: A low-carb stand-in for traditional bread that soaks up juices and adds texture.
- 1 tbsp olive oil: Helps sauté veggies and steak to golden perfection without extra carbs.
- 1 medium onion, sliced: Brings natural sweetness and depth when softened.
- 1 medium green bell pepper, sliced: Adds brightness and a mild crunch to each bite.
- 1 lb sirloin steak, thinly sliced: Tender protein that cooks quickly and absorbs seasonings.
- 2 cloves garlic, minced: Infuses the dish with aromatic savory notes.
- 4 oz cream cheese, softened: Creates a creamy binder that holds everything together.
- 1/2 cup beef broth: Delivers rich, meaty flavor and thins the cream cheese into a smooth sauce.
- 1 cup shredded mozzarella cheese: Melts beautifully for a gooey, stretchy layer.
- 4 slices provolone cheese, torn: Offers extra creaminess and a subtly sharp finish.
- 1 tsp Worcestershire sauce: Provides tangy umami that amps up steakhouse vibes.
- 1/2 tsp salt: Balances all the flavors without overpowering them.
- 1/4 tsp black pepper: Gives a gentle kick and rounds out the seasoning.
How To Make Cheesy Low Carb Philly Cheesesteak Casserole
Let’s walk through the steps to build this delicious casserole from scratch. With a bit of sautéing, mixing, and baking, you’ll end up with layers of tender steak, softened peppers and onions, creamy sauce, and perfect melted cheese. Follow each step closely to ensure your casserole bakes up bubbly and holds its shape when sliced.
1. Preheat the oven to 375°F (190°C), making sure it reaches the right temperature before baking.
2. Heat the olive oil in a large skillet over medium-high heat, shimmering but not smoking.
3. Add the sliced onion and bell pepper and sauté until softened and slightly caramelized, about 5 minutes, stirring occasionally.
4. Add the thinly sliced steak to the skillet and cook until browned on all sides, about 4 minutes, tossing to ensure even searing.
5. Stir in the minced garlic and cook for 1 more minute until fragrant, taking care not to burn the garlic.
6. Reduce heat to medium, then add the cream cheese and beef broth, stirring continuously until the mixture is smooth and creamy.
7. Mix in the cauliflower rice, Worcestershire sauce, salt, and black pepper, cooking for 3 minutes to evaporate excess moisture and infuse flavors.
8. Transfer the mixture to a greased 9×13-inch casserole dish, spreading it into an even layer.
9. Sprinkle the shredded mozzarella evenly over the top, then place torn provolone slices on top for a cheesy blanket.
10. Bake for 15–20 minutes until the cheese is fully melted and bubbly, rotating the dish halfway if your oven has hot spots.
11. Let the casserole rest for 5 minutes before slicing and serving, which helps it set and hold its shape.
Serving Suggestions
This casserole is a star on its own, but a few simple sides can elevate your meal further. Here are some of our favorite ways to enjoy those cheesy, meaty flavors:
- Serve with a crisp Caesar salad topped with shaved Parmesan to contrast the rich casserole.
- Add a side of garlic-buttered green beans for a vibrant and crunchy vegetable note.
- Pair with low-carb dinner rolls or keto bread to mop up every last bit of cheesy sauce.
- Garnish slices with fresh chopped parsley or a sprinkle of red pepper flakes for a pop of color and heat.
Tips For Perfect Cheesy Low Carb Philly Cheesesteak Casserole
Getting every layer just right takes a few handy tricks, but once you know them, this recipe is foolproof and delicious every time. Let these notes guide you toward a golden, flavorful bake.
- For extra crisp top, broil for 1–2 minutes at the end.
- Cauliflower rice can be swapped for broccoli rice if preferred.
- Letting the casserole rest before cutting helps maintain its shape.
- Adjust salt, pepper, and Worcestershire sauce to your taste.
How To Store It
When you’ve got leftovers (or want to prep ahead), storing this casserole properly ensures it stays flavorful and firm:
- Refrigerate in an airtight container for up to 3–4 days; the flavors actually deepen over time.
- Freeze individual portions by wrapping slices tightly in plastic wrap and placing them in a freezer bag for up to 2 months.
- Thaw overnight in the fridge, then reheat in a 350°F oven for 10–15 minutes until warmed through.
- Microwave single servings on medium power for 1–2 minutes, stirring halfway to keep the cheese melty and even.
Frequently Asked Questions
Here are answers to a few common questions that come up when making this casserole:
- How long does it take to prepare and cook this casserole?
From start to finish it takes about 10 minutes to prepare (slicing onion, bell pepper, and steak, and gathering ingredients), 15–20 minutes to bake, plus 5 minutes resting time, so roughly 30–35 minutes total.
- How can I prevent the cauliflower rice from turning soggy?
Make sure to use well-drained or thawed frozen cauliflower rice. When cooking in the skillet, sauté it over medium heat for about 3 minutes to evaporate excess moisture before transferring to the casserole dish. Avoid adding extra liquid beyond the specified beef broth.
- Can I substitute any ingredients to suit dietary preferences?
Yes. You can swap cauliflower rice for broccoli rice or shredded zucchini (just squeeze out moisture first). For a dairy-free version, omit cream cheese and use full-fat coconut milk with a dairy-free cheese alternative. Adjust seasoning to taste, especially salt and Worcestershire sauce, since substitutes may alter flavor.
- What’s the best way to slice the steak thinly and ensure it stays tender?
Partially freeze the sirloin steak for about 15 minutes before slicing; a firmer texture makes thin, even cuts easier. Slice against the grain in paper-thin strips so the meat cooks quickly and remains tender when sautéed.
- How do I achieve a golden, crisp cheese topping?
After baking for 15–20 minutes until the cheese is melted, switch to broil and place the casserole 6–8 inches from the broiler heating element for 1–2 minutes. Watch closely to avoid burning, and remove once the cheese is bubbly and lightly browned.
- Can I assemble the casserole in advance, and how should I store it?
Yes. Prepare the full casserole up to step 8, cover tightly with foil or plastic wrap, and refrigerate for up to 24 hours. When ready to bake, let it sit at room temperature for 10 minutes, then bake at 375°F for an extra 2–3 minutes if still cold in the center.
- What’s the best way to store and reheat leftovers?
Store leftovers in an airtight container in the refrigerator for up to 3–4 days. To reheat, cover the casserole with foil and heat in a 350°F oven for 10–15 minutes until warmed through. You can also microwave individual servings for 1–2 minutes, stirring halfway to ensure even heating.
- How can I adjust the flavor profile if I prefer more seasoning?
Increase the Worcestershire sauce to 1½ teaspoons or add a pinch of smoked paprika for depth. For heat, stir in crushed red pepper flakes or a dash of hot sauce when adding the garlic. Always taste before baking and adjust salt and pepper as needed.
What Makes This Special
This Cheesy Low Carb Philly Cheesesteak Casserole works because it captures all the rich, meaty goodness of a classic Philly cheesesteak without piling on carbs—thanks to that sneaky cauliflower rice base. You get layers of tender sirloin, sweet peppers and onions, creamy cheese sauce, and a bubbly cheese topping in every slice. Go ahead and print this article to tuck into your recipe binder, then dive in and let me know how it turns out! If you have any questions or want to share your own twists, drop a comment below—I’m always here for a chat about cheesy bakes.
Cheesy Low Carb Philly Cheesesteak Casserole
Description
Creamy bites of tender steak, sweet sautéed peppers and onions blend with tangy cream cheese and Worcestershire sauce, all blanketed in bubbly mozzarella and provolone.
Ingredients
Instructions
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Preheat the oven to 375°F (190°C).
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Heat olive oil in a large skillet over medium-high heat.
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Add sliced onion and bell pepper and sauté until softened, about 5 minutes.
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Add the thinly sliced steak and cook until browned, about 4 minutes.
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Stir in minced garlic and cook for 1 minute more.
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Reduce heat to medium and add cream cheese and beef broth, stirring until smooth.
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Stir in cauliflower rice, Worcestershire sauce, salt, and pepper and cook for 3 minutes.
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Transfer the mixture to a greased 9x13-inch casserole dish.
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Sprinkle shredded mozzarella evenly over the top and place torn provolone slices on top.
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Bake for 15–20 minutes until cheese is melted and bubbly.
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Let the casserole rest for 5 minutes before slicing and serving.
Nutrition Facts
Serving Size 6
- Amount Per Serving
- Calories 66kcal
Note
- For extra crisp top, broil for 1–2 minutes at the end.
- Cauliflower rice can be swapped for broccoli rice if preferred.
- Letting the casserole rest before cutting helps maintain its shape.
- Adjust salt, pepper, and Worcestershire sauce to your taste.
