This low carb Philly cheesesteak casserole has all the pieces you like concerning the traditional sandwich, from shaved steak to heaps of cheese to sauteed peppers and onions. It’s a creamy keto casserole that doubles as an ideal social gathering snack!

In case you’re slicing carbs or just craving a Philly cheesesteak sandwich, look no additional than this keto-friendly Philly cheesesteak casserole. It’s a foolproof sport day appetizer or principal dish with all the components and flavors of the traditional sandwich, however not one of the carbs!
This low carb casserole is straightforward to make in a single pan. It begins by sauteeing thinly-sliced steak, peppers, and onions earlier than transferring onto the simple 4-ingredient cheese sauce. Pop it within the oven to complete, then serve it with all the dippable snacks you like!
Why this recipe works
- Fast and simple to make. You’ll love how effortlessly this tacky casserole comes collectively.
- Take pleasure in as an appetizer or principal dish. This recipe is, after all, the last word keto tremendous bowl snack, nevertheless it’s additionally a incredible principal. Pair it together with your favourite keto aspect dishes or stuff it between two slices of keto bread.
- It’s versatile. Customise the elements and taste boosters by mixing up the cheeses, proteins, and extra.
I like that this Philly steak casserole recipe doubles as a straightforward game-day dip. It’s a enjoyable snack you’ll be able to serve with much more dips and appetizers or subsequent to low carb casseroles, like this Pizza Casserole or Taco Casserole.
Elements wanted
The entire traditional Philly cheesesteak elements are on this low carb casserole, minus the bread. That is what you’ll want:
- Butter – Butter and olive oil are sometimes interchangeable, however I don’t recommend making that substitution on this recipe. Pan-frying the steak and veggies in butter provides a wealthy, full taste you simply can’t get from oil alone.
- Steak – Use sirloin, high spherical, or eye of spherical. All three are inexpensive choices which can be tender sufficient for cheesesteaks. Alternatively, to maintain it true to the unique Philadelphia cheesesteak, use a well-marbled ribeye.
- Salt and pepper – To season the steak.
- Bell peppers and onions – You should utilize any colour of bell pepper and number of onion.
- Garlic – For taste.
- Cream cheese – That is used as the bottom of the cheese sauce. It offers it an additional creamy consistency and helps bind the casserole elements collectively.
- Half and half – Or milk. This may clean out the cheese sauce because it melts, making a wealthy sauce with a thick, silky mouthfeel.
- Cheddar cheese – Shred it from the block your self.
- Pepper jack cheese – Or you should use shredded mozzarella as an alternative.
How one can make Philly cheesesteak casserole
This Philly cheesesteak casserole recipe strikes shortly when you get began, which is why it’s vital to have the steak sliced, the veggies chopped, and the dairy out and prepared. Right here’s the right way to put it collectively:
Step 1: Brown the steak
Soften the butter in a pan over medium warmth. As soon as sizzling, add the steak slices and season them with salt and pepper. Cook dinner till they’re now not pink, then put aside on a clear plate.

Step 2: Saute the peppers and onions
Add the bell peppers, onion, and garlic to the identical pan and prepare dinner till softened.

Step 3: Make the cheese sauce
Stir the cream cheese and half and half into the pan. Carry the sauce as much as a simmer.
Return the steak to the pan, together with half of the cheddar cheese and half of the pepper jack. Stir till the cheese melts.

Step 4: Put all of it collectively and bake
Switch the cheesesteak combination from the pan to a greased baking dish. Sprinkle the remainder of the shredded cheeses over high, then bake within the oven till the cheeses are melted. Take pleasure in sizzling!

Tricks to make the perfect recipe
- To make the steak simpler to slice, place it within the freezer for 15 to half-hour earlier than slicing. Use a pointy chef’s knife to chop the steak in opposition to the grain into the thinnest strips doable.
- Low on time? Purchase pre-sliced steak as an alternative or ask the meat counter to shave an everyday steak for you.
- Be at liberty to arrange and bake the casserole in a big forged iron or oven-safe skillet as an alternative of transferring it right into a baking dish.
Variations
- Cheese choices – For steak and cheese sandwich purists, white American cheese, smooth delicate or sharp provolone, and Cheez Whiz are the one choices. For this casserole, you should use any mild-flavored shredded cheese like mozzarella, Monterey jack, gruyere, swiss, or gouda.
- Add mushrooms – In case you like mushrooms in your cheesesteaks, prepare dinner them within the skillet with the peppers and onions.
- Make it with rooster – Swap the steak with shredded rooster breasts!
What to serve with this dish
This Philly cheesesteak casserole goes nice with virtually any aspect when served as a principal dish. Use it because the filling in these zucchini boats or serve a scoop subsequent to zucchini noodles, spaghetti squash, cauliflower rice, or keto mashed potatoes.
As an appetizer, encompass the casserole with keto-friendly dippers, like parmesan crisps, cucumber slices, keto garlic bread, keto tortilla chips, and pork rinds.
Storage
To retailer: In case you’re fortunate sufficient to have leftovers, preserve them in an hermetic container within the fridge for 3 to 4 days.
To reheat: The easiest way to reheat the Philly cheesesteak casserole is in a foil-covered baking dish in a 350ºF oven. Alternatively, reheat particular person parts within the microwave.

Extra must-try keto Superbowl snacks
Continuously requested questions
Positive, you should use no less than 85% lean floor beef as an alternative. For a lighter model, use floor rooster or turkey.
Sure, you may get a slight head begin by browning the steak slices and sauteeing the veggies the evening earlier than. Preserve all the pieces saved individually within the fridge. Then, earlier than social gathering time, end cooking, assembling, and baking the casserole as instructed.
No, I don’t suggest freezing the casserole. Cheese and dairy can develop into gritty when thawed, which suggests the cheese sauce will lose its creamy, indulgent consistency.

- 1 tablespoon butter
- 2 lbs sirloin steak sliced
- 1/2 teaspoon salt
- 1/4 teaspoon pepper
- 2 massive bell peppers sliced
- 1 massive onion chopped
- 2 cloves garlic minced
- 1/2 cup cream cheese
- 1/4 cup + 2 tablespoons half-and-half or cream
- 1 cup cheddar cheese divided
- 1 cup mozzarella cheese divided
Preheat the oven to 180C/350F.
In a non-stick pan or skillet, add the butter and place over medium warmth. As soon as sizzling, add the sliced sirloin steak and season with salt and pepper. Cook dinner the steak till now not pink. Take away the steak from the skillet.
Add the bell peppers, onion, and garlic and prepare dinner for 4-5 minutes, till they soften. Add the cream cheese and half-and-half and blend nicely. Carry all the pieces to a simmer and prepare dinner for an extra 5 minutes.
Add the steak again into the pan, together with half the cheddar cheese and half the pepper jack cheese, and blend nicely.
Switch the cheesesteak combination right into a greased 9 x 13-inch baking dish. Sprinkle with remaining shredded cheese and bake for 15-20 minutes or till the cheese is effervescent and golden.
Serving: 1serving | Energy: 293kcal | Carbohydrates: 5g | Protein: 35g | Fats: 15g | Sodium: 482mg | Potassium: 584mg | Fiber: 2g | Vitamin A: 1660IU | Vitamin C: 54mg | Calcium: 311mg | Iron: 2mg | NET CARBS: 3g