Low Carb Philly Cheesesteak Casserole

By: Maria
Posted: 03/27/2025

Craving a Philly cheesesteak but looking for a low-carb alternative? This Low Carb Philly Cheesesteak Casserole is the perfect solution! Packed with tender steak, sautéed bell peppers, onions, and creamy cheese, this casserole captures all the flavors of a classic Philly cheesesteak, minus the carbs. Whether you’re following a keto, low-carb, or just a healthy lifestyle, this dish is sure to satisfy your cravings without the guilt!

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Ingredients

To make this Low Carb Philly Cheesesteak Casserole, you’ll need:

1 lb ribeye steak (or flank steak), thinly sliced
2 tablespoons olive oil
1 small onion, thinly sliced
1 bell pepper, thinly sliced (red, green, or both)
1 cup heavy cream
1 1/2 cups shredded provolone cheese (or mozzarella)
1 cup shredded cheddar cheese
1 teaspoon garlic powder
1/2 teaspoon onion powder
Salt and pepper to taste
Fresh parsley (for garnish)

Substitutions

Need to swap out ingredients? Try these alternatives:

Steak – Use ground beef or chicken breast if preferred.
Bell Peppers – Substitute with zucchini or spinach for a different flavor.
Heavy Cream – Use coconut cream for a dairy-free option.
Provolone Cheese – Swap with Swiss or cheddar cheese.

How to Make Low Carb Philly Cheesesteak Casserole

Step 1: Prepare the Steak

Heat the olive oil in a large skillet over medium-high heat. Add the thinly sliced steak and cook for 3-5 minutes, or until browned. Remove the steak from the skillet and set it aside.

Step 2: Sauté the Vegetables

In the same skillet, add the sliced onion and bell pepper. Cook for 4-5 minutes, or until softened. Season with garlic powder, onion powder, salt, and pepper.

Step 3: Make the Creamy Sauce

Pour the heavy cream into the skillet with the vegetables and bring to a simmer. Stir in the provolone and cheddar cheese until melted and smooth.

Step 4: Combine Steak and Sauce

Return the cooked steak to the skillet and stir everything together to combine.

Step 5: Assemble the Casserole

Preheat your oven to 375°F (190°C). Grease a baking dish with cooking spray or butter. Transfer the steak and vegetable mixture into the dish, spreading it evenly.

Step 6: Bake

Bake in the preheated oven for 15-20 minutes, or until the casserole is bubbly and the cheese is melted and golden brown.

Step 7: Garnish and Serve

Sprinkle with fresh parsley and serve hot!

Mix-Ins

Elevate your Low Carb Philly Cheesesteak Casserole with these mix-ins:

Mushrooms – Add sautéed mushrooms for an earthy flavor.
Jalapeños – For a spicy kick!
Bacon – For added crunch and smoky flavor.

Recipe Tips

Slice the steak thinly for faster cooking and better texture.
Use a high-fat cheese like provolone for a creamier casserole.
Customize with your favorite vegetables like mushrooms, spinach, or artichokes.

Storage Instructions

Refrigeration:

Store leftovers in an airtight container in the fridge for up to 3-4 days.

Freezing:

Freeze in individual portions for up to 2 months. Thaw overnight before reheating.

Reheating:

Reheat in the microwave or oven until warmed through.

Recipe Variations

Low Carb Philly Cheesesteak Soup – Add broth and extra cream for a soup version.
Spicy Philly Cheesesteak – Add hot sauce or chili flakes for heat.
Philly Cheesesteak Zucchini Boats – Use zucchini as a base instead of a casserole dish.

FAQs

Can I make this dish ahead of time?

Yes! Assemble the casserole and refrigerate it until ready to bake.

Can I use a different type of meat?

Absolutely! Ground beef or chicken would work well in this casserole.

Can I make this dish dairy-free?

Yes, use coconut cream and dairy-free cheese alternatives.

What can I serve with this casserole?

Serve with a side of cauliflower rice, roasted vegetables, or a simple salad.

This Low Carb Philly Cheesesteak Casserole is a delicious and satisfying way to enjoy the flavors of a Philly cheesesteak without the carbs. Try it tonight for a low-carb dinner that everyone will love! 🧀🍖

Frequently Asked Questions

Can I assemble the Low Carb Philly Cheesesteak Casserole ahead of time?

Yes, you can definitely assemble the casserole ahead of time! Prepare the steak, sauté the vegetables, make the creamy sauce, and combine everything. Transfer the mixture to your greased baking dish, cover tightly with plastic wrap or foil, and refrigerate for up to 24 hours before baking. When ready to bake, simply remove the casserole from the refrigerator, let it sit at room temperature for about 30 minutes, and then bake as directed.

What are the best ingredient substitutions for the steak in this recipe?

While ribeye or flank steak are recommended for the best flavor, you have several great substitution options! Ground beef is a convenient alternative; use about 1 pound and brown it in the skillet before adding the vegetables. Chicken breast, thinly sliced or diced, is another good choice; you’ll need approximately 1 pound of chicken breast, and cook it until it’s fully cooked through. Adjust cooking times accordingly. For a vegetarian option, consider using plant-based ground “beef” crumbles.

How do I know when the Low Carb Philly Cheesesteak Casserole is perfectly cooked?

The casserole is perfectly cooked when the cheese is fully melted, bubbly, and lightly golden brown on top. Visually, the mixture should be bubbling around the edges of the baking dish. The internal temperature of the casserole doesn’t necessarily have a specific target, but you can ensure the steak is cooked through if you’re using an alternative meat. The casserole should be heated through and the vegetables should be tender. A gentle aroma of melted cheese and savory steak will also indicate doneness.

Can I double or scale up this Low Carb Philly Cheesesteak Casserole recipe for a larger crowd?

Yes, you can easily double or scale up the recipe! For doubling, simply double all the ingredient quantities. You may need to use a larger baking dish, such as a 9×13 inch pan, or divide the casserole between two smaller dishes. The cooking time might need to be extended by about 5-10 minutes, so keep an eye on it and check for doneness. For larger scaling, consider using multiple skillets to sauté the vegetables and meat simultaneously to save time.

What are the key nutritional highlights and health benefits of this Low Carb Philly Cheesesteak Casserole?

This casserole offers a good source of protein from the steak or alternative meat, which is essential for muscle building and repair. Bell peppers and onions provide vitamins and antioxidants. The provolone and cheddar cheeses contribute calcium for bone health. Using heavy cream adds healthy fats, and the low-carb nature of the dish makes it suitable for those following a keto or low-carb diet, helping to manage blood sugar levels.