Low Carb Philly Cheesesteak Casserole (Easy, Keto-Friendly!)

Craving the rich, meaty, and cheesy goodness of a classic Philly cheesesteak but want to keep it low carb? You’ve come to the right place. This Low Carb Philly Cheesesteak Casserole recipe packs all the iconic flavors you love into a simple, hearty, and keto-friendly dish. Forget the bun and dig into this satisfying casserole that’s perfect for a weeknight family dinner, meal prep, or a crowd-pleasing potluck. It’s a guaranteed hit that will have everyone asking for seconds.

Why This Low Carb Philly Cheesesteak Casserole is a Must-Try

This isn’t just another casserole recipe; it’s a game-changer for anyone on a low-carb or keto diet. It’s incredibly easy to make, requires just one skillet, and delivers a truly authentic Philly cheesesteak experience. We’ve perfected the blend of savory steak, caramelized onions and peppers, and a rich, creamy cheese sauce that bubbles to perfection in the oven. It’s pure comfort food, reimagined.

The Key Ingredients for Your Keto Casserole


The magic of this dish lies in using simple, high-quality ingredients to create layers of flavor. Here’s what you’ll need to bring this incredible low carb casserole to life.

Choosing Your Meat: Steak vs. Ground Beef

For the most authentic flavor, thinly sliced ribeye steak is the gold standard. However, sirloin or skirt steak also work beautifully and are more budget-friendly. For an even quicker option, you can use ground beef, which transforms this dish into a delicious Philly cheesesteak bake. Both options are fantastic, so choose what works best for you!

The Perfect Cheesy Combination

What’s a Philly cheesesteak without the cheese? We use a combination of provolone and cream cheese to create an ultra-creamy, tangy, and gooey sauce that smothers the steak and veggies. The provolone provides that classic, sharp flavor, while the cream cheese adds a luxurious, velvety texture that brings the whole casserole together.

Another perspective on a scoop of the easy low carb Philly cheesesteak casserole, highlighting the creamy sauce and beef.
Ready to dive into this incredible one-pan dinner?

Step-by-Step Instructions: How to Make Low Carb Philly Cheesesteak Casserole

Making this keto-friendly casserole is a straightforward process. Follow these simple steps for a perfect result every time.

  1. Prep Your Veggies: Start by slicing your onion and bell peppers. This is the foundation of your casserole’s flavor, so take a moment to get even slices.
  2. Sauté the Vegetables: In a large, oven-safe skillet, heat olive oil over medium-high heat. Add the onions and peppers and cook until they are soft and slightly caramelized, about 8-10 minutes. This step brings out their natural sweetness. Add minced garlic and cook for another minute until fragrant. Remove the veggies from the skillet and set them aside.
  3. Cook the Steak: Season your thinly sliced steak with salt and pepper. Add it to the same skillet and cook until browned. If you’re using ground beef, cook it until no longer pink, breaking it apart with a spoon. Drain any excess grease.
  4. Create the Creamy Sauce: Reduce the heat to low and add the cream cheese and beef broth to the skillet with the cooked meat. Stir continuously until the cream cheese is fully melted and the sauce is smooth and creamy.
  5. Combine and Bake: Return the cooked vegetables to the skillet. Stir everything together until the steak and veggies are coated in the delicious sauce. Top the entire casserole evenly with slices of provolone cheese.
  6. Bake to Perfection: Transfer the skillet to a preheated oven and bake until the cheese is melted, bubbly, and slightly golden on top. This usually takes about 10-15 minutes.

This simple process results in a mouthwatering Low Carb Philly Cheesesteak Casserole that tastes like it came from a gourmet kitchen. For another fantastic one-pan meal, check out this Low Carb Pizza Bowl recipe.

A close-up spoonful of the keto Philly cheesesteak bake, showing the melted cheese, tender steak, and peppers.
Look at that cheesy, meaty perfection in every bite!

Pro Tips for the Best Philly Cheesesteak Bake

Want to elevate your casserole from great to absolutely unforgettable? Here are a few expert tips:

  • Slice Steak Thinly: If using steak, make sure it’s sliced very thin against the grain. Partially freezing the steak for about 30 minutes makes it much easier to slice.
  • Don’t Crowd the Pan: When cooking the steak, work in batches if necessary to ensure it sears and browns properly rather than steaming.
  • Use Full-Fat Cream Cheese: For the creamiest, richest sauce, use full-fat block-style cream cheese. Avoid the whipped variety as it can make the sauce watery.
  • Let it Rest: After taking the casserole out of the oven, let it rest for 5-10 minutes. This allows the sauce to thicken slightly and makes it easier to serve. If you’re a fan of hearty beef recipes, you’ll also love this classic Mississippi Pot Roast.

Serving and Storage Suggestions

This versatile casserole can be served as a complete meal on its own. It’s also delicious paired with a simple green salad, steamed broccoli, or some Crispy Roasted Cauliflower.

Store leftovers in an airtight container in the refrigerator for up to 4 days. To reheat, simply microwave individual portions or place the casserole back in a 350°F (175°C) oven until warmed through. This recipe is also great for meal prepping lunches for the week!

Frequently Asked Questions

Absolutely! You can assemble the entire casserole, cover it, and store it in the refrigerator for up to 24 hours before baking. You may need to add 5-10 minutes to the baking time if it’s going into the oven cold.


Thinly sliced ribeye is the most traditional and flavorful choice. However, sirloin or skirt steak are also excellent, more affordable options. For the best results, slice the steak very thinly against the grain.


Yes, you can easily substitute ground beef for steak. Simply brown the ground beef, drain the excess grease, and proceed with the recipe as written. It creates a delicious and budget-friendly Philly cheesesteak bake.


Store any leftovers in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave or place the casserole back in a 350°F (175°C) oven until heated through.


This casserole is very filling on its own, but it pairs wonderfully with a simple side salad, steamed green beans, roasted broccoli, or cauliflower rice to complete the meal.


More Delicious Low Carb Recipes to Try

If you loved this keto-friendly casserole, explore some of our other popular low-carb dinner options! This Keto Cajun Sausage and Cabbage Alfredo is another skillet favorite, and our Dill Pickle Parmesan Chicken is a uniquely delicious choice for any night of the week.

Low Carb Philly Cheesesteak Casserole

A close-up spoonful of the keto Philly cheesesteak bake, showing the melted cheese, tender steak, and peppers.
FL Recipes

Low Carb Philly Cheesesteak Casserole (Easy, Keto-Friendly!)

This Low Carb Philly Cheesesteak Casserole is a simple, hearty, and keto-friendly dish. It packs all the iconic flavors of a classic Philly cheesesteak into a one-pan meal perfect for any weeknight dinner.
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 6 servings
Course: Dinner, Main Course
Cuisine: American
Calories: 550

Ingredients
  

  • 2 lbs ribeye steak thinly sliced, or ground beef
  • 1 tbsp olive oil
  • 1 large onion sliced
  • 2 bell peppers sliced (any color)
  • 3 cloves garlic minced
  • 8 oz cream cheese softened
  • 1/2 cup beef broth
  • 8 slices provolone cheese
  • 1 tsp salt or to taste
  • 1/2 tsp black pepper or to taste

Equipment

  • 1 Large Oven-Safe Skillet
  • 1 Knife
  • 1 Cutting Board

Method
 

  1. Preheat your oven to 375°F (190°C).
  2. In a large, oven-safe skillet, heat olive oil over medium-high heat. Add the sliced onion and bell peppers. Cook, stirring occasionally, for 8-10 minutes until softened and lightly caramelized. Add the minced garlic and cook for another minute until fragrant. Remove the vegetables from the skillet and set aside.
  3. Add the thinly sliced steak to the same skillet. Season with salt and pepper and cook until browned. Drain any excess fat.
  4. Reduce the heat to low. Add the softened cream cheese and beef broth to the skillet. Stir until the cream cheese is melted and a creamy sauce forms.
  5. Return the cooked onions and peppers to the skillet and stir to combine everything well.
  6. Top the mixture with the provolone cheese slices in an even layer.
  7. Transfer the skillet to the preheated oven and bake for 10-15 minutes, or until the cheese is bubbly and golden brown.
  8. Let it rest for 5 minutes before serving. Enjoy!

Nutrition

Calories: 550kcalProtein: 35gFat: 42gFiber: 2g

Notes

Tip 1: For easier slicing, place the steak in the freezer for about 20-30 minutes before slicing it.
Tip 2: Feel free to add mushrooms along with the peppers and onions for extra flavor and texture.
Tip 3: You can substitute Cheez Whiz or American cheese for a different, but equally delicious, cheesy topping.
Keyword keto philly cheesesteak,low carb casserole,philly cheesesteak bake

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A delicious Low Carb Philly Cheesesteak Casserole in a baking dish, topped with melted provolone cheese and ready to be served. A perfect keto-friendly dinner.
All the flavor of a Philly cheesesteak, none of the carbs! Get the recipe for this amazing casserole.

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