Ingredients
For the Steak Mixture:
- 1.5 lbs thinly sliced steak (such as ribeye or sirloin)
- 1 tbsp olive oil
- 1 large onion, sliced
- 2 bell peppers (any color), sliced
- 1 tsp garlic powder
- 1/2 tsp onion powder
- 1/2 tsp paprika
- Salt and pepper to taste
For the Cheese Sauce:
- 4 tbsp butter
- 4 tbsp cream cheese, softened
- 1 cup heavy cream
- 1 cup shredded provolone cheese
- 1/2 cup shredded mozzarella cheese
- 1/4 cup grated parmesan cheese
- 1/4 tsp garlic powder
- Salt and pepper to taste
Optional Toppings:
- Pickled jalapeños
- Chopped green onions
- A drizzle of hot sauce
Let’s Gather ‘Round: Essential Equipment
Baking Dish
You’ll need a 9×13 inch baking dish. This is the perfect size to ensure even cooking and plenty of room for all those delicious layers. If you don’t have that exact size, something close will work just fine!
Large Skillet or Saute Pan
This is where the magic happens with the steak and veggies. Make sure it’s large enough so you don’t overcrowd the pan, which can steam the ingredients instead of searing them.
Mixing Bowls
Essential for prepping your ingredients and combining the cheese sauce components. I always have a few different sizes on hand for maximum efficiency!
Step-by-Step Instructions: Your Path to Cheesesteak Casserole Bliss
Step 1: Prep the Steak and Veggies
- Slice the steak into thin strips if it isn’t already. The thinner, the better! It’ll cook quickly and be super tender.
- Slice the onion and bell peppers into thin strips as well. Uniformity is key for even cooking.
Step 2: Cook the Steak and Veggies
- Heat the olive oil in a large skillet or saute pan over medium-high heat. Make sure the pan is nice and hot before adding the steak.
- Add the steak to the skillet and cook until browned and cooked through. Don’t overcrowd the pan; work in batches if necessary to get a good sear.
- Remove the steak from the skillet and set aside.
- Add the sliced onion and bell peppers to the same skillet and cook until softened and slightly caramelized, about 5-7 minutes.
- Stir in the garlic powder, onion powder, paprika, salt, and pepper. Cook for another minute until fragrant.
- Return the cooked steak to the skillet with the veggies and toss to combine.
Step 3: Whip Up the Cheese Sauce
- In a saucepan over medium heat, melt the butter.
- Add the cream cheese and stir until smooth and melted.
- Gradually whisk in the heavy cream until well combined.
- Remove from heat and stir in the provolone cheese, mozzarella cheese, and parmesan cheese until melted and smooth.
- Stir in the garlic powder, salt, and pepper. Taste and adjust seasonings as needed – a little extra salt can really bring out the flavors!
Step 4: Assemble the Casserole
- Preheat your oven to 350°F (175°C).
- Spread the steak and veggie mixture evenly into the prepared 9×13 inch baking dish.
- Pour the cheese sauce evenly over the steak and veggie mixture. Make sure everything is nicely coated in that creamy, cheesy goodness.
- Optionally, sprinkle additional shredded cheese on top for extra cheesiness.
Step 5: Bake to Perfection
- Bake in the preheated oven for 20-25 minutes, or until the cheese is melted, bubbly, and lightly golden brown.
Step 6: Cool and Serve
- Let the casserole cool for a few minutes before serving. This will help the cheese set up a bit and prevent it from being too runny.
- Garnish with your favorite toppings, such as pickled jalapeños, chopped green onions, or a drizzle of hot sauce.
- Serve warm and enjoy!
Tips and Tricks for the Ultimate Cheesesteak Casserole
Choosing the Right Steak
Ribeye and sirloin are excellent choices because they’re flavorful and tender. However, you can also use other cuts like flank steak or even pre-shaved steak from the grocery store to save time. Just be sure to adjust the cooking time accordingly.
Getting That Perfect Sear
A hot pan is crucial for getting a good sear on the steak. Don’t overcrowd the pan, or the steak will steam instead of sear. Work in batches if necessary.
Cheese Sauce Consistency
If your cheese sauce is too thick, add a little more heavy cream, a tablespoon at a time, until you reach the desired consistency. If it’s too thin, simmer it for a few minutes longer to allow it to thicken up.
Customizing Your Casserole
Feel free to add other veggies to your casserole, such as mushrooms or banana peppers. You can also use different types of cheese, like Monterey Jack or pepper jack, for a little extra kick.
Variations: Remix Your Cheesesteak Casserole
Spicy Cheesesteak Casserole
Add a pinch of red pepper flakes to the steak and veggie mixture, or use pepper jack cheese in the cheese sauce for a spicy twist.
Mushroom Cheesesteak Casserole
Add sliced mushrooms to the skillet along with the onions and bell peppers for a more earthy flavor.
Pizza Cheesesteak Casserole
Add a layer of marinara sauce under the steak and veggie mixture, and top with pepperoni or other pizza toppings.
What to Serve with Your Philly Cheesesteak Casserole
This casserole is delicious on its own, but here are a few side dishes that would complement it perfectly:
- A simple green salad with a vinaigrette dressing
- Steamed broccoli or asparagus
- Cauliflower rice for a low-carb option
Storage and Reheating Instructions
Storing Leftovers
Store any leftover casserole in an airtight container in the refrigerator for up to 3-4 days.
Reheating
Reheat individual portions in the microwave for 1-2 minutes, or until heated through. You can also reheat the entire casserole in the oven at 350°F (175°C) for 15-20 minutes, or until heated through.
Beyond the Casserole: Related Recipes You’ll Love
If you’re a fan of easy and flavorful casseroles, you’ll definitely want to check out these other delicious recipes:
- Chili Cheese Tater Tot Casserole: A fun and satisfying dish that’s perfect for game day.
- Taco Casserole Recipe: All the flavors of a taco, in a convenient and easy-to-make casserole.
- Philly Cheesesteak Roll Ups: A handheld version of the classic cheesesteak.
- Creamy Low Carb Chicken Casserole: A comforting and keto-friendly casserole that’s packed with flavor.
- Philly Cheesesteak Pasta: A creamy pasta dish with all the delicious flavors of a Philly Cheesesteak.
Nutritional Information (Approximate)
Per serving (based on 8 servings):
- Calories: Approximately 450-550
- Net Carbs: 5-7g (depending on ingredients used)
- Protein: 35-45g
- Fat: 30-40g
Note: Nutritional information is an estimate and can vary based on specific ingredients and portion sizes. For accurate information, calculate using your preferred nutrition tracking app.
Final Thoughts: Your Cheesesteak Casserole Adventure Awaits!
This Philly Cheesesteak Casserole is a guaranteed crowd-pleaser. It’s easy to make, customizable, and packed with flavor. Whether you’re following a keto diet or just looking for a delicious and satisfying meal, this recipe is sure to become a new favorite. So, grab your skillet, preheat your oven, and get ready to enjoy a taste of Philly in casserole form. Happy cooking!
What kind of steak is recommended for the Philly Cheesesteak Casserole?
Ribeye or sirloin are excellent choices because they are flavorful and tender. Flank steak or pre-shaved steak can also be used.
How do I prevent the steak from steaming instead of searing?
Use a hot pan and avoid overcrowding it. Cook the steak in batches if necessary to ensure a good sear.
What can I serve with the Philly Cheesesteak Casserole?
A simple green salad with vinaigrette, steamed broccoli or asparagus, or cauliflower rice are all good side dish options.
How should I store and reheat leftover casserole?
Store leftovers in an airtight container in the refrigerator for up to 3-4 days. Reheat individual portions in the microwave for 1-2 minutes or reheat the entire casserole in the oven at 350°F (175°C) for 15-20 minutes.

Philly Cheesesteak Casserole (Easy Keto)
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C).
- Slice the steak into thin strips if it isn’t already.
- Slice the onion and bell peppers into thin strips.
- Heat the olive oil in a large skillet or saute pan over medium-high heat.
- Add the steak to the skillet and cook until browned and cooked through. Don’t overcrowd the pan; work in batches if necessary to get a good sear. Remove the steak from the skillet and set aside.
- Add the sliced onion and bell peppers to the same skillet and cook until softened and slightly caramelized, about 5-7 minutes.
- Stir in the garlic powder, onion powder, paprika, salt, and pepper. Cook for another minute until fragrant.
- Return the cooked steak to the skillet with the veggies and toss to combine.
- In a saucepan over medium heat, melt the butter.
- Add the cream cheese and stir until smooth and melted.
- Gradually whisk in the heavy cream until well combined.
- Remove from heat and stir in the provolone cheese, mozzarella cheese, and parmesan cheese until melted and smooth.
- Stir in the garlic powder, salt, and pepper. Taste and adjust seasonings as needed.
- Spread the steak and veggie mixture evenly into the prepared 9×13 inch baking dish.
- Pour the cheese sauce evenly over the steak and veggie mixture.
- Optionally, sprinkle additional shredded cheese on top for extra cheesiness.
- Bake in the preheated oven for 20-25 minutes, or until the cheese is melted, bubbly, and lightly golden brown.
- Let the casserole cool for a few minutes before serving.
- Garnish with your favorite toppings, such as pickled jalapeños, chopped green onions, or a drizzle of hot sauce.
- Serve warm and enjoy!