Weight Watchers Low-Carb Philly Cheesesteak Casserole

There are certain dinners that just make everyone happy, and anything with beef, onions, peppers, and melted cheese is usually a safe bet in my house.

This Weight Watchers Low-Carb Philly Cheesesteak Casserole takes all those classic Philly cheesesteak flavors I love and turns them into an easy, cozy casserole without the big hoagie roll. You get seasoned beef, tender peppers and onions, creamy cheese, and that delicious layer of melted provolone on top.

A friend actually suggested making a low-carb Philly cheesesteak casserole to me after we were talking about easy weeknight dinners. I kept thinking about it, and the following weekend I finally gave it a try.

I made it for my family on a Saturday evening, mostly because I wanted something comforting after a long week without spending the entire night in the kitchen. As soon as the beef, onions, and peppers started cooking, everyone seemed to find their way into the kitchen asking what smelled so good.

When the casserole came out of the oven with the cheese bubbling around the edges, I knew we had a winner.

Everyone loved it.

And honestly, that’s my favorite kind of recipe—the ones that don’t feel like “diet food” at all. It’s just good, satisfying food that happens to fit nicely into a lower-carb meal plan.

❤️ Why You’ll Love This Recipe

Weight Watchers-friendly

Low-carb and satisfying

Packed with protein

Cheesy and comforting

Easy one-dish dinner

Family-friendly

Simple everyday ingredients

Great for meal prep

No bread required

Ready in about 40 minutes

📋 Recipe Information

Prep Time: 10 minutes

Cook Time: 30 minutes

Total Time: 40 minutes

Servings: 6

Course: Dinner, Main Dish, Casserole

Cuisine: American-Inspired

Difficulty: Easy

Ingredients

Philly Cheesesteak Casserole

1½ pounds 93% lean ground beef

1 medium yellow onion, thinly sliced

1 green bell pepper, sliced

1 red bell pepper, sliced

3 cloves garlic, minced

1 tablespoon Worcestershire sauce

4 ounces reduced-fat cream cheese, softened

½ cup plain nonfat Greek yogurt

1 cup reduced-fat shredded mozzarella cheese

4 slices reduced-fat provolone cheese

½ teaspoon Italian seasoning

½ teaspoon smoked paprika

½ teaspoon salt

¼ teaspoon black pepper

Optional Additions

8 ounces sliced mushrooms

Sliced jalapeños

Red pepper flakes

Fresh parsley

Green onions

🍳 Equipment Needed

Large skillet

9×13-inch baking dish

Cutting board

Sharp knife

Wooden spoon

Spatula

👩‍🍳 How to Make Weight Watchers Low-Carb Philly Cheesesteak Casserole

Step 1: Get the Oven Ready

Preheat the oven to 375°F (190°C).

Lightly spray a 9×13-inch baking dish with cooking spray and set it aside.

Step 2: Brown the Beef

Heat a large skillet over medium-high heat.

Add the lean ground beef and cook for about 6–8 minutes, breaking it apart with a wooden spoon.

Cook until the beef is browned and completely cooked through.

Drain any excess grease.

Step 3: Add the Peppers and Onion

Add the sliced onion, green pepper, and red pepper to the skillet.

Cook for about 5–7 minutes, stirring occasionally.

You want the vegetables to soften while still keeping a little texture.

Add the minced garlic during the final minute and stir until fragrant.

At this point, your kitchen should already smell like a cheesesteak shop.

Step 4: Season Everything

Add the Worcestershire sauce, Italian seasoning, smoked paprika, salt, and black pepper.

Stir everything together and cook for another 1–2 minutes.

The Worcestershire sauce adds a wonderful savory depth to the beef.

Step 5: Make It Creamy

Reduce the heat to low.

Add the softened cream cheese and Greek yogurt.

Stir gently until the cream cheese melts into the beef mixture and everything becomes creamy.

Don’t worry if it looks a little thick. That’s exactly what we want.

Step 6: Transfer to the Baking Dish

Spoon the beef mixture into the prepared baking dish.

Spread it into an even layer.

Sprinkle the shredded mozzarella over the top.

Then arrange the provolone slices evenly across the casserole.

Step 7: Bake

Place the casserole in the oven.

Bake uncovered for 18–22 minutes, or until the cheese is melted and bubbling around the edges.

If you want that beautiful golden cheese on top, turn on the broiler for 1–2 minutes at the end.

Watch it carefully because the cheese can go from golden to too brown very quickly.

Step 8: Let It Rest

Remove the casserole from the oven and let it rest for about 5 minutes.

I know it’s tempting to scoop it up immediately, but giving it those few minutes helps everything settle.

Step 9: Serve

Spoon the casserole onto plates and add fresh parsley or green onions if desired.

Serve hot and enjoy.

💡 Tips for Success

Use Lean Beef

Using 93% lean ground beef keeps the casserole hearty while limiting excess grease.

Soften the Cream Cheese

Take the cream cheese out of the refrigerator ahead of time. It will blend much more easily into the beef.

Don’t Overcook the Vegetables

You want the peppers and onions tender, not mushy. They’ll continue cooking in the oven.

Use Provolone

Provolone is what really gives this casserole that classic Philly cheesesteak character.

Measure the Cheese

If you’re following Weight Watchers, cheese can add Points quickly. Measuring your portions makes it much easier to stay on track.

Let It Rest

Those few minutes after baking make the casserole easier to serve and keep the filling from being too loose.

🌟 Delicious Variations

Mushroom Philly Cheesesteak

Add sliced mushrooms with the onions and peppers. This is one of my favorite versions.

Chicken Philly Casserole

Replace the beef with cooked, chopped chicken breast.

Turkey Philly Casserole

Use lean ground turkey for an even lighter option.

Spicy Philly

Add sliced jalapeños or red pepper flakes for some heat.

Steakhouse Version

Replace the ground beef with thinly sliced sirloin steak for a more traditional cheesesteak texture.

Extra Cheesy

Add another small handful of mozzarella if you’re making this for a weekend gathering and aren’t as concerned about keeping the Points down.

🥗 What to Serve With It

Since this casserole is already rich and filling, I like serving it with something fresh.

Try:

Simple green salad

Cucumber salad

Roasted broccoli

Steamed green beans

Roasted cauliflower

Sautéed spinach

Cauliflower rice

Air-fried vegetables

A crisp green salad with a light vinaigrette is my favorite pairing.

🥡 Storage Instructions

Refrigerator

Store leftover casserole in an airtight container in the refrigerator for up to 4 days.

Reheating

Reheat individual servings in the microwave in 60–90 second intervals until hot.

You can also cover the casserole and reheat it in a 325°F (165°C) oven.

Freezer

Freeze individual portions in freezer-safe containers for up to 2 months.

Thaw overnight in the refrigerator before reheating.

The peppers may soften slightly after freezing, but the casserole will still be delicious.

📊 Approximate Nutrition Per Serving

Based on 6 servings:

Calories: 390

Protein: 35g

Fat: 23g

Carbohydrates: 10g

Fiber: 2g

Net Carbs: 8g

Sodium: 720mg

Nutrition information is approximate and will vary depending on the exact brands and ingredients used.

⭐ Weight Watchers Points

An estimated serving is approximately 7 WW Points, based on the lighter ingredients listed above.

However, WW Points can vary according to your current Weight Watchers plan, personalized ZeroPoint foods, serving size, and the exact brands of beef and cheese you use.

For the most accurate number, enter your exact ingredients into your current WW app or recipe calculator.

❓ Frequently Asked Questions

Can I use ground turkey instead of beef?

Absolutely. Lean ground turkey works beautifully and gives you a slightly lighter casserole.

Can I use chicken?

Yes. Cooked shredded or diced chicken breast makes a delicious chicken Philly version.

Can I add mushrooms?

Definitely. Mushrooms are fantastic with the beef, onions, peppers, and provolone.

Can I leave out the cream cheese?

You can, although the casserole won’t be quite as creamy. You could add a little extra Greek yogurt instead.

What cheese is best?

Provolone gives the most recognizable Philly cheesesteak flavor. Mozzarella adds extra meltiness, so I like using both.

Can I prepare it ahead?

Yes. Assemble the casserole, cover it, and refrigerate it for up to 24 hours. Add a few extra minutes to the baking time if it’s going into the oven cold.

How do I make it lower in Points?

Use extra-lean ground beef or ground turkey, reduced-fat cheeses, fat-free Greek yogurt, and carefully measure the cheese.

Can I make this without bread?

Yes—that’s exactly what makes this casserole so convenient for a low-carb meal. You get the cheesesteak flavors without needing a roll.

💚 Final Thoughts

This Weight Watchers Low-Carb Philly Cheesesteak Casserole has everything I want in an easy comfort-food dinner.

It’s cheesy, savory, filling, and packed with tender peppers and onions. Best of all, it doesn’t feel like you’re giving anything up just because you’re trying to keep dinner lower in carbs.

I still remember my family sitting around the table last weekend, going back for another scoop and talking about how good the melted provolone was.

Those are the recipes I keep coming back to.

The ones that work on a busy weeknight, make the house smell wonderful, and bring everyone to the table without a lot of fuss.