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Low Carb Philly Cheese Steak Casserole
If you love a classic Philly cheesesteak — all that savory beef, melty cheese, and tender peppers — but don’t necessarily want the bread, this casserole is about to become your new favorite comfort food.
It has everything you crave: juicy, seasoned steak, sweet sautéed peppers and onions, and a creamy, cheesy layer that bubbles up golden in the oven. It’s rich, satisfying, and feels indulgent in all the right ways — without the carbs.
This is the kind of dinner that fills your kitchen with that unmistakable steakhouse aroma. Garlic sizzling in the pan. Peppers softening and turning slightly sweet. Cheese melting into every nook and cranny. It’s cozy, hearty, and perfect for busy weeknights when you want something warm and comforting without a lot of fuss.
Let’s dive in.
Ingredients
1 1/2 pounds beef sirloin or shaved steak
1 tablespoon olive oil
1 medium green bell pepper, sliced
1 medium red bell pepper, sliced
1 small onion, thinly sliced
2 cloves garlic, minced
1 teaspoon Worcestershire sauce
1/2 teaspoon salt (or to taste)
1/2 teaspoon black pepper
4 ounces cream cheese, softened
1/2 cup heavy cream
1 1/2 cups shredded provolone cheese (or mozzarella)
1/2 cup shredded mozzarella (for topping)
Instructions
1. Preheat the oven
Start by preheating your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish and set it aside. This will make cleanup much easier later.
2. Cook the beef
Heat the olive oil in a large skillet over medium-high heat. Once hot, add the sliced beef in an even layer.
Season with salt and pepper. Let it cook for about 4–5 minutes, stirring occasionally, until browned and cooked through.
Remove the beef from the skillet and set it aside. Try not to snack on too many pieces — it smells amazing at this point.
3. Sauté the vegetables
In the same skillet (don’t wipe it out — all that flavor stays!), add the sliced bell peppers and onion.
Cook for 5–6 minutes, stirring occasionally, until they’re softened and slightly caramelized. Add the minced garlic and cook for another 30 seconds, just until fragrant.
4. Make it creamy
Reduce the heat to medium. Add the softened cream cheese and heavy cream directly into the skillet with the vegetables.
Stir gently until everything melts together into a smooth, creamy sauce. Add the Worcestershire sauce and taste for seasoning. Adjust salt and pepper if needed.
5. Bring it together
Return the cooked beef to the skillet. Stir until every piece is coated in that creamy, savory mixture. It should look rich and hearty.
6. Assemble the casserole
Transfer everything into your prepared baking dish. Spread it out evenly.
Sprinkle the shredded provolone over the top, then finish with the mozzarella. Make sure you get good coverage — that’s where the magic happens.
7. Bake
Bake uncovered for 15–20 minutes, until the cheese is melted, bubbly, and lightly golden on top.
Let it rest for about 5 minutes before serving. This helps everything settle and makes it easier to scoop.
Presentation
Serve this casserole hot, straight from the dish for a cozy, family-style feel. Garnish with a sprinkle of fresh parsley if you’d like a pop of color.
For a complete low-carb meal, pair it with a crisp green salad or roasted broccoli on the side. If you’re serving guests who aren’t worried about carbs, you could even offer toasted rolls alongside for a build-your-own cheesesteak moment.
Nutritional Information:
⏰ Prep Time: 15 minutes | Cooking Time: 25 minutes | Total Time: 40 minutes
🔥 Kcal: Approximately 480 kcal per serving
🍽️ Servings: 6 servings
Conclusion
This low carb Philly cheese steak casserole delivers all the bold, comforting flavors of the classic sandwich — just in a warm, cheesy, fork-friendly form. It’s hearty enough to satisfy serious cravings and simple enough for a weeknight dinner.
If you’re looking for something cozy, filling, and crowd-pleasing without the bread, this one’s a keeper. Make it once, and I have a feeling it’ll find a permanent spot in your dinner rotation.
