Low Carb Philly Cheesesteak Casserole

Q: How do I store leftovers?

Store in an airtight container in the fridge for up to 4 days . Reheat in the microwave or oven.

Let’s be honest—some days, the idea of cooking feels like climbing Mount Laundry (which, by the way, is very real in my house). That’s why this Low Carb Philly Cheesesteak Casserole is such a life-saver. It’s rich, hearty, ooey-gooey in the best possible way, and low carb to boot. Whether you’re trying to cut carbs, feed a hungry family, or just want to eat something incredibly satisfying without hovering over the stove for an hour, this one’s for you.

I first whipped this up on a rainy Tuesday when I had exactly 30 minutes, three semi-ripe bell peppers, and zero patience for anything fussy. Now? It’s one of my top-requested casseroles at home—and yes, even my picky eater son calls it “that cheesesteak thing I love.”

Why You’ll Love This Low Carb Philly Cheesesteak Casserole

This dish is basically a big, warm hug disguised as dinner. Here’s what makes it a favorite:

Low carb, big flavor – Perfect for anyone watching carbs but not willing to compromise on taste.
Cheesy layers – Think gooey provolone and mozzarella creating a golden, bubbling top you’ll want to dive into.
One-pan magic – Everything cooks together into a creamy, savory, veggie-packed meal.
Family-friendly – Even carb lovers (read: husbands, teenagers, in-laws) go back for seconds.

Ingredients You’ll Need

Here’s the lowdown on the flavorful, no-fuss ingredients:

Ground Beef (high-fat preferred) – Juicy and flavorful. The richness takes this casserole from good to amazing.
Sweet Onion (diced) – Adds depth and a bit of sweetness.
Bell Peppers (any color) – Use a mix for both flavor and color pop!
Garlic (minced) – Fresh is best, always. Your kitchen will smell divine.
Cream Cheese – Makes everything creamy and brings all the flavors together.
Worcestershire Sauce – Tangy umami kick that lifts the whole dish.
Salt & Pepper – Basic, but essential.
Provolone Cheese (sliced) – Sharp, melty goodness.
Mozzarella Cheese (shredded) – For that perfect cheese pull.
Olive Oil – For sautéing and flavor depth. Use extra virgin if you can.

How to Make Low Carb Philly Cheesesteak Casserole

1. Preheat and Prep

Preheat your oven to 350°F (175°C). Spray a 9×13 baking dish with non-stick spray so your cheesy masterpiece doesn’t stick.

2. Sauté the Veggies

In a large skillet, heat olive oil over medium heat. Add diced onions and bell peppers, and cook for about 5-6 minutes until they’re soft and fragrant. Toss in the garlic and cook another 30 seconds. (Don’t walk away—garlic burns fast!)

3. Brown the Beef

Add ground beef right into the skillet. Season with salt and pepper, then cook until browned—about 7-8 minutes. Break it up with your spatula as you go.

4. Season the Mixture

Stir in that glorious Worcestershire sauce. Let it coat the beef and veggies, bringing all the flavors together like a choir of savory goodness.

5. Make it Creamy

Turn the heat to low. Add cream cheese, stirring until it’s completely melted and creamy. Don’t panic if it looks a little lumpy at first—it’ll smooth out like magic.

6. Assemble the Casserole

Transfer your creamy beef mixture to the prepared baking dish. Spread it out evenly, like a cozy beef blanket.

7. Add the Cheese Toppings

Layer provolone slices over the top, followed by a generous handful of shredded mozzarella. This is the part where your casserole turns into a cheesy wonderland.

8. Bake Until Bubbly

Pop it into the oven and bake for 20-25 minutes, or until the cheese is melted, bubbly, and just a bit golden on top.

9. Rest, Then Serve

Let it sit for 5 minutes before diving in. This helps everything set up just right.

Tips for the Best Philly Cheesesteak Casserole

Use full-fat cream cheese for extra creaminess. Low-fat just doesn’t melt the same way.
Want extra veggies? Mushrooms work great here!
Cooking ahead? You can prep the meat mixture in advance and store it in the fridge for up to two days before baking.

Pro tip: This reheats like a dream. Leftovers may actually be better the next day. Just sayin’.

My Philly Cheesesteak Casserole Story

I originally made this dish trying to recreate the classic Philly cheesesteak in casserole form—without the bread. The result? A bubbly, golden, low carb dream that had my husband asking if I’d made enough for seconds. Now I double the batch almost every time.

It’s become my no-brainer choice for game nights, chilly weeknights, and last-minute guests who “don’t eat carbs anymore.” Trust me, they won’t miss the roll.

Spoonful of cheesy Low Carb Philly Cheesesteak Casserole lifted from a baked dish with gooey melted cheese, beef, and colorful peppers. — This irresistible Low Carb Philly Cheesesteak Casserole is packed with savory beef, melty cheese, and vibrant peppers—comfort food made keto-friendly!

FAQs: Let’s Clear Things Up

Can I substitute ground turkey for beef?

Absolutely! Ground turkey works great and makes it a bit leaner. Just add a touch more olive oil for flavor and moisture.

Is this casserole keto-friendly?

Yes! With low carbs and high fat from cheese and beef, it fits well into a keto lifestyle.

How do I store leftovers?

Store in an airtight container in the fridge for up to 4 days. Reheat in the microwave or oven.

Can I freeze it?

You bet. Freeze in individual portions for easy grab-and-go lunches. Just thaw and bake until heated through.

A Weeknight Hero You’ll Crave Again and Again

Whether you’re following a low carb lifestyle or just craving a cheesy, comforting dinner, this Low Carb Philly Cheesesteak Casserole is a total crowd-pleaser. It’s easy enough for a weeknight, but flavorful enough to make you feel like you just ordered takeout from your favorite sandwich shop—minus the bread and the guilt.

Give it a try this week—you’ll wonder how you ever lived without it.

Let me know how it goes over at your table—and don’t forget to tag @ChickenMagicRecipes if you post a pic. I love seeing your delicious creations!

More Low-Carb Comforts You’ll Love

If you loved this Low Carb Philly Cheesesteak Casserole, then you’re in for a treat. I’ve rounded up a few more crave-worthy, low-carb recipes that are packed with flavor and just as easy to whip up on a busy night. Here are some delicious ideas to keep your dinner game strong:

Try this creamy and satisfying Low Carb Chicken Casserole — it’s cheesy, rich, and a perfect fit for your low-carb lifestyle.
For a spicy twist, check out the bold flavors of the Jalapeno Buffalo Chicken Casserole—a dish that packs heat and comfort in every bite.
Need a veggie-loaded option? You’ll adore the fresh flavors in this Chicken Breast with Zucchini and Squash recipe—light, wholesome, and perfect for clean eating.
And if you’re craving something indulgent yet nutritious, don’t miss the Ground Beef and Brussels Sprouts skillet—it’s savory, simple, and great for meal prep.

These recipes will keep your meals exciting without derailing your health goals. Dig in and discover new favorites!