Keto-Friendly Philly Cheesesteak Casserole Recipe

High Protein Low Carb Philly Cheesesteak Casserole Recipe – Cheesy, Satisfying, and Guilt-Free Comfort Food

Introduction
This high protein low carb Philly cheesesteak casserole is a mouthwatering, one-pan dinner that turns a classic sandwich into a rich, cheesy, keto-friendly meal. Juicy ground beef, sautéed peppers and onions, gooey melted cheese, and a touch of cream come together in a casserole that delivers all the iconic Philly cheesesteak flavor—without the bread.

It’s hearty and satisfying with fewer carbs, making it perfect for anyone following a low-carb, high-protein lifestyle. Plus, it’s simple to throw together and makes amazing leftovers. Whether you’re cutting carbs or just craving something cozy and full of flavor, this casserole has you covered.

Ingredients Overview

  • Ground Beef: The base of the casserole. Use 90% lean for a balance of flavor and reduced fat. Ground turkey or chicken can also be used.
  • Bell Peppers: Green, red, or a mix. They bring crunch and slight sweetness that balance the richness of the beef and cheese.
  • Onions: Sautéed onions add deep, sweet-savory flavor—essential for that authentic cheesesteak taste.
  • Mushrooms: Optional but add a great umami depth and hearty texture.
  • Cream Cheese: Adds creaminess to bind everything and enriches the dish without being heavy.
  • Provolone Cheese: The classic cheesesteak cheese—melts smoothly and gives the dish that iconic finish. Mozzarella or Monterey Jack can also work.
  • Garlic: Boosts flavor in the beef mixture.
  • Seasonings: Salt, pepper, Worcestershire sauce, and optional red pepper flakes for extra zing.

Substitutions: Use ground turkey for leaner protein. Add jalapeños or hot sauce for spice. Replace cream cheese with Greek yogurt or cottage cheese for variation.

Step-by-Step Instructions

  1. Preheat the Oven
    Set oven to 375°F. Lightly grease a 9×13-inch casserole dish.
  2. Cook the Ground Beef
    In a large skillet over medium heat, cook 1½ lbs ground beef until browned and cooked through. Drain excess fat. Add 1 tsp Worcestershire sauce, ½ tsp salt, ½ tsp black pepper, and stir in 2 cloves minced garlic. Cook for 1 more minute.
  3. Sauté the Veggies
    Push the beef to one side (or remove temporarily) and add 1 tbsp olive oil to the pan. Add 1 large diced onion, 2 bell peppers (sliced), and 1 cup sliced mushrooms if using. Cook for 6–8 minutes until softened.
  4. Add Cream Cheese
    Reduce heat to low. Stir in 4 oz cream cheese until melted and combined with beef and vegetables. Remove from heat.
  5. Assemble the Casserole
    Transfer the beef mixture to the prepared casserole dish. Top with 8 slices of provolone cheese, overlapping slightly.
  6. Bake Until Bubbly
    Bake uncovered for 15–20 minutes until the cheese is melted and bubbly. For a golden top, broil for an additional 2–3 minutes, watching closely.
  7. Rest and Serve
    Let rest 5 minutes before serving. Garnish with chopped parsley or red pepper flakes if desired.

Tips, Variations & Substitutions

  • Add a Crunch: Top with crushed pork rinds or almond flour breadcrumbs for a crisp finish.
  • Make It Spicier: Mix in hot sauce or jalapeños before baking.
  • Dairy-Free Option: Use dairy-free cream cheese and cheese alternatives—though melt quality may vary.
  • Use Steak Strips: For a more traditional feel, replace ground beef with thinly sliced cooked steak.
  • Make It a Meal Prep Star: Divide into portions and refrigerate for 4–5 days. Reheats well in the microwave or oven.

Serving Ideas & Occasions

Perfect for:

  • Low-Carb Dinners: Hearty without the heaviness of carbs
  • Meal Prep Lunches: High in protein and reheats well
  • Family-Friendly Meals: Familiar flavors with hidden veggies
  • Potlucks and Gatherings: Serve in a warm dish with sides

Pair it with:

  • Roasted cauliflower or broccoli
  • Side salad with vinaigrette
  • Zucchini noodles or sautéed spinach

Nutritional & Health Notes

This recipe fits well into low-carb, keto, and high-protein diets.

  • Ground beef provides protein, iron, and B-vitamins
  • Cream cheese adds richness without needing flour or thickening agents
  • Vegetables increase fiber, flavor, and micronutrients
  • Low in sugar and carbs—great for blood sugar balance and satiety

To lighten:

  • Use lean ground turkey or chicken
  • Use reduced-fat cream cheese
  • Add more veggies to increase volume and fiber

FAQs

Can I freeze this casserole?
Yes. Freeze in individual portions or whole. Wrap tightly and freeze for up to 2 months. Thaw in fridge before reheating.

Can I use different cheeses?
Definitely. Mozzarella, Monterey Jack, or Swiss melt well. Cheddar adds sharpness but won’t be as creamy.

How long does it last in the fridge?
Up to 4–5 days in an airtight container. Reheat in the microwave or oven until warmed through.

Can I make it ahead of time?
Yes. Assemble the casserole, cover, and refrigerate. Bake when ready to serve.

What’s the best way to reheat it?
Microwave individual portions or reheat the whole dish in a 350°F oven covered with foil until hot (about 15–20 minutes).

Can I skip the cream cheese?
You can, but it helps bind and cream the casserole. Try Greek yogurt or cottage cheese for a lighter alternative.

Can I add more vegetables?
Yes—spinach, zucchini, or kale work well. Just cook off extra moisture before mixing into the casserole.

Print

Keto-Friendly Philly Cheesesteak Casserole Recipe

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All the flavor of a Philly cheesesteak without the carbs. A hearty casserole of ground beef, peppers, onions, and melty provolone cheese.

  • Author: Maya Lawson
  • Prep Time: 15 minutes
  • Cook Time: 25 minutes
  • Total Time: 40 minutes
  • Yield: 6 servings 1x

Ingredients

Scale

lbs ground beef (90% lean)
2 bell peppers, sliced
1 large onion, diced
1 cup mushrooms, sliced (optional)
2 garlic cloves, minced
1 tbsp olive oil
4 oz cream cheese
1 tsp Worcestershire sauce
½ tsp salt
½ tsp black pepper
8 slices provolone cheese
Chopped parsley, for garnish

Instructions

  1. Preheat oven to 375°F. Lightly grease a 9×13 baking dish.
  2. Brown ground beef in skillet. Add Worcestershire, salt, pepper, and garlic. Cook 1 more minute.
  3. Sauté onion, peppers, and mushrooms in olive oil until soft.
  4. Stir in cream cheese until melted and combined.
  5. Transfer mixture to baking dish. Top with provolone slices.
  6. Bake uncovered for 15–20 minutes. Broil 2–3 minutes for golden top.
  7. Let rest 5 minutes. Garnish and serve.

Notes

Swap beef for turkey or steak strips. Add more veggies for volume. Great for keto meal prep.

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