Low Carb Philly Cheese Steak Casserole

Our easy Philly cheese steak casserole skillet is the best way for you to enjoy all the flavors you love from Philly cheesesteak but made low carb and bunless in less than 30 minutes. This is the easiest cheesiest casserole using thin-sliced beef steak, but feel free to use ground beef like many of our readers do!

Our readers love this easy cheese steak casserole!

When you're craving the flavors of Philly cheesesteak but don't want the bread or carbs, you'll love our reader favorite low carb cheese steak casserole. Our recipe is super simple by cooking it in a skillet, and then briefly browning it in the oven. 34 grams of protein and 5 net carbs per serving!

We used shaved beef steak already pre-sliced, you can just as easily use ground beef to make this more economical! We also add in sliced mushrooms, which isn't traditional, but we think it adds a lot of extra flavor! For meal rotation variety, we think you'll love our cheesesteak stuffed peppers too.

We added new photos in 2024, but it's the same great recipe as the original below!

Is this a keto Philly cheese steak?

Our low carb Philly cheesesteak casserole is also keto friendly! To keep the carbs down, be sure to use full fat cream cheese and don't use pre-shredded cheese. Cheese from a bag is coated with potato starch to keep it from sticking.

Ingredients you'll need

• Olive Oil
• Beef - we like to use thin-sliced shaved steak from Trader Joes that comes pre-sliced. You can also thinly slice raw steak like Ribeye OR just swap the shaved beef for ground beef!
• Onion - any variety will work, yellow onion, red onion, or sweet onion
• Bell Pepper, sliced - we used a mix of colored bell peppers for color, any will work whether you're using green bell peppers, red, yellow, or orange.
• Crimini mushrooms, sliced (optional)- or white button mushrooms
• Provolone cheese - Provolone cheese is the classic, but other white cheeses such as mozzarella, white cheddar, or Colby Jack works great too. You can use either provolone cheese slices or shredded provolone cheese.
• Cream cheese
• Beef broth
• Worcestershire sauce - or use tamari or coconut aminos for a gluten-free alternative.
• Garlic Salt - if you don't have garlic salt on hand, use a mix of salt and garlic powder or steak seasoning to taste
• Black Pepper - fresh ground black pepper

How to make Philly cheesesteak casserole

1. Preheat your oven to 350 degrees F.
2. Preheat a large skillet over medium-high heat, then add the olive oil.
3. Add the beef, garlic salt, and ground black pepper. Cook until it just turns brown. Remove the meat from the skillet and set it aside, leaving 2 tablespoon of grease in the skillet (add more oil if needed).
4. Add the sliced onions, sliced bell peppers, and mushrooms to the skillet and cook them until softened. Mix in the Worcestershire sauce, beef broth, and cream cheese. Continue cooking until the cream cheese melts.
5. Add the beef back into the pan. Top with 2 cups of provolone cheese.
6. Place the skillet in the oven and bake for 15-minutes until the cheese melts and the casserole starts to bubble. Or you can broil for 2-3 minutes for a crispy top. Enjoy! Serve with a simple side salad or cauliflower rice on the side.

Recipe notes

• If your skillet is not oven safe, transfer the entire dish to an oven safe 9x13 baking or casserole dish.
• For steak, we prefer thin sliced sirloin tip steak, ribeye, or shaved beef. Do not use stew meat as it will be tough. You can totally sub ground beef in place of the steak or even leftover pot roast!
• It's totally fine to leave out the mushrooms, it's not traditional and not everyone likes them. We get it.
• Baking is just to melt the provolone cheese slices. If you prefer, you can top your skillet with a cover and heat over the stovetop to melt instead of baking the cheese until golden brown.
• Leftovers will keep in the fridge for 3-4 days.

More beef recipes

• Hamburger Green Bean Casserole with Mushrooms
• Ground Beef Zucchini Casserole
• Hearty Crock Pot Kielbasa Chili
• Asian BBQ Instant Pot Beef Ribs

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Recipe

Philly Cheesesteak Casserole (BEST Easy Recipe!)

WholeLottaYum

An easy and hearty Philly cheesesteak casserole that's full of flavor yet without the bun. Not only does it cook in 30 minutes, but it's gluten free, low carb, and keto friendly too.

4.66 from 162 votes

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Course Casseroles

Cuisine American

Servings 8

Calories 454 kcal

Ingredients

  

1x2x3x

• 1 tablespoon olive oil
• 2 lb thinly sliced beef
• 1 small onion sliced
• 2 bell peppers sliced
• 2 cups button or baby bella mushrooms sliced (optional)
• 2 cups shredded provolone or slices
• 4 oz cream cheese
• ½ cup beef broth
• 1 teaspoon Worcestershire sauce
• 1 teaspoon garlic salt or salt + garlic powder
• ½ teaspoon ground black pepper

Instructions

 

• Preheat the oven to 350F. In a large skillet (ideally cast iron or oven proof), heat the olive oil over medium-high heat.
• Add the thinly sliced beef, garlic salt, and pepper and cook it until browned. Remove from the pan and set aside, but leave about 2 tablespoon of grease in the skillet to cook the vegetables in. If there isn't enough grease left, just add a little more oil to the pan for the veggies.
• Add the sliced bell peppers, onion, and mushrooms to the skillet. Cook until softened.
• Add the Worcestershire sauce, beef broth, and cream cheese to the pan and combine. Heat through until the cream cheese is melted.
• Add the beef back to the pan and combine all ingredients. If you don't have an ovenproof skillet that's large enough to hold all of the ingredients, transfer the mixture to a 9x13 pan and combine it in there.
• Sprinkle with shredded provolone cheese or provolone slices.
• Bake 15 mins until heated through. Broil for 2-3 mins if prefer crispy cheese on top. Garnish with chopped fresh parsley. Enjoy!

Video

Notes

• We used thinly sliced sirloin tip steak, ribeye or shaved beef are great choices. Don't use sliced stew meat since it's a tough cut. Ground beef is a great substitute for thinly sliced steak, or even leftover pot roast.
• Cook the steak and veggies in batches and transfer to a 9x13 pan to finish baking if you don't have a large ovenproof skillet.
• Since the mixture is already heated and you're just cooking until the cheese melts, you can also leave the mix in the skillet, turn the burner down to medium low and cover the pan. Cook through until the cheese is melted.

Nutrition

Serving: 1gCalories: 454kcalCarbohydrates: 6gProtein: 34gFat: 33gSaturated Fat: 16gPolyunsaturated Fat: 1gMonounsaturated Fat: 12gCholesterol: 128mgSodium: 703mgPotassium: 599mgFiber: 1gSugar: 3gVitamin A: 1414IUVitamin C: 39mgCalcium: 300mgIron: 2mg

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