If you love the classic Philly cheesesteak sandwich but want a healthier, low-carb option, this Low Carb Philly Cheesesteak Casserole is the perfect solution. It delivers all the savory flavors you love—tender beef, sautéed peppers and onions, and melted cheese—without the bread.

This hearty casserole is rich, cheesy, and incredibly satisfying, making it perfect for weeknight dinners, keto diets, or meal prep. Everything cooks together in one dish, creating a comforting meal that’s both simple and flavorful.

Best of all, this Low Carb Philly Cheesesteak Casserole is easy to make and ready in about 35 minutes.

Why You’ll Love Low Carb Philly Cheesesteak Casserole

This recipe brings the iconic sandwich flavors into a healthy casserole.

Reasons to Make Low Carb Philly Cheesesteak Casserole

Low carb and keto-friendly
Packed with savory steak flavor
Loaded with melty cheese
Easy one-pan meal
Perfect for meal prep and family dinners

It’s a comforting dish that feels indulgent while staying low in carbs.

Ingredients for Low Carb Philly Cheesesteak Casserole

Here are the ingredients needed for this delicious casserole.

Ingredient	Quantity
Thinly sliced steak (ribeye or sirloin)	1 lb
Olive oil	1 tbsp
Green bell pepper (sliced)	1
Red bell pepper (sliced)	1
Onion (sliced)	1
Garlic (minced)	2 cloves
Cream cheese	4 oz
Heavy cream	¼ cup
Worcestershire sauce	1 tbsp
Shredded provolone or mozzarella	1½ cups
Salt	½ tsp
Black pepper	½ tsp

How to Make Low Carb Philly Cheesesteak Casserole

Follow these simple steps to prepare this satisfying dish.

Step 1: Preheat the Oven

Preheat your oven to 375°F (190°C) and lightly grease a casserole dish.

Step 2: Cook the Vegetables

Heat olive oil in a large skillet over medium heat.

Add:

Bell peppers
Onion

Cook for 4–5 minutes until slightly softened.

Add garlic and cook for another minute.

Step 3: Cook the Steak

Add the thinly sliced steak to the skillet.

Season with salt and black pepper, then cook for 4–5 minutes until browned.

Step 4: Make the Creamy Sauce

Reduce heat and add:

Cream cheese
Heavy cream
Worcestershire sauce

Stir until the mixture becomes smooth and creamy.

Step 5: Assemble the Casserole

Transfer the beef mixture into the prepared casserole dish.

Sprinkle shredded provolone or mozzarella cheese evenly over the top.

Step 6: Bake

Bake for 15–18 minutes, until the cheese is fully melted and slightly golden.

Step 7: Serve

Let the casserole rest for 5 minutes, then serve warm.

Tips for the Best Low Carb Philly Cheesesteak Casserole

Use Thinly Sliced Steak

Thin slices cook quickly and create the authentic cheesesteak texture.

Add Mushrooms

Sautéed mushrooms add extra flavor and richness.

Use Provolone for Authentic Flavor

Provolone cheese gives the casserole a true Philly cheesesteak taste.

Delicious Variations of Philly Cheesesteak Casserole

Spicy Cheesesteak Casserole

Add jalapeños or red pepper flakes for heat.

Chicken Cheesesteak Casserole

Replace the steak with sliced chicken breast.

Extra Cheesy Version

Add an extra layer of cheddar or mozzarella on top.

What to Serve with Low Carb Philly Cheesesteak Casserole

This dish pairs well with light low-carb sides.

Great options include:

Roasted broccoli
Cauliflower rice
Fresh green salad
Garlic green beans
Zucchini noodles

Frequently Asked Questions About Low Carb Philly Cheesesteak Casserole

Is Low Carb Philly Cheesesteak Casserole keto-friendly?

Yes. This recipe contains very few carbohydrates, making it perfect for keto diets.

Can I make this casserole ahead of time?

Yes. Assemble the casserole and refrigerate it for up to 24 hours before baking.

Can I freeze Philly Cheesesteak Casserole?

Yes. Store it in an airtight container and freeze for up to 2 months.

What cut of beef works best?

Ribeye or sirloin are excellent choices because they are tender and flavorful.

Conclusion

This Low Carb Philly Cheesesteak Casserole is a delicious way to enjoy the flavors of a classic cheesesteak while keeping your meal low in carbs and high in flavor. With savory beef, sautéed peppers and onions, creamy sauce, and melted cheese, it’s a comforting dish that’s both satisfying and easy to make.

Perfect for weeknight dinners, meal prep, or anyone following a keto lifestyle, this Low Carb Philly Cheesesteak Casserole is sure to become a regular favorite at your dinner table.