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Sizzling Keto Philly Cheesesteak Casserole Recipe: A Low-Carb Comfort Food Classic

Imagine all the mouthwatering flavors of a classic Philly cheesesteak juicy steak, caramelized onions, melted cheese, and savory peppers transformed into an easy, keto-friendly casserole that’s just as satisfying as the original. This Sizzling Keto Philly Cheesesteak Casserole takes the beloved sandwich and reimagines it as a hearty, low-carb bake that’s perfect for weeknight dinners, meal prep, or game day feasts. Born from the streets of Philadelphia, the cheesesteak is an American icon, and this recipe honors its legacy while keeping carbs in check.

The first bite delivers a symphony of textures and flavors: tender slices of ribeye steak, sweet onions softened to perfection, vibrant bell peppers, and a gooey blanket of melted provolone cheese. Unlike traditional cheesesteaks that rely on bread, this casserole gets its structure from layers of meat and cheese, creating a dish that’s rich, protein-packed, and irresistibly cheesy. Whether you’re committed to keto or simply craving a comforting, no-fuss meal, this recipe brings the taste of Philly right to your table without the guilt.

What Makes Sizzling Keto Philly Cheesesteak Casserole Special?

This dish stands out for its bold flavors and effortless preparation, making it a must-try for cheesesteak lovers and keto dieters alike.

  • Signature Ingredients: Ribeye steak, provolone cheese, and caramelized onions recreate the authentic Philly cheesesteak experience.
  • No Bread, No Problem: A low-carb, gluten-free twist that doesn’t sacrifice flavor.
  • One-Dish Wonder: Cook the filling on the stovetop, then bake for melty perfection minimal cleanup required.
  • Meal Prep Hero: Tastes even better as leftovers, making it ideal for busy weeknights.

Whether you’re serving it for family dinner, potlucks, or game day, this casserole is a crowd-pleaser that proves keto eating can be indulgent.

Key Ingredients in Keto Philly Cheesesteak Casserole

Ribeye Steak (or Sirloin)

  • Delivers rich, beefy flavor and stays tender when baked (freeze for 30 minutes for easy slicing).

Provolone Cheese

  • Melts beautifully and adds the classic cheesesteak gooeyness.

Bell Peppers & Onions

  • Provide sweetness and texture, caramelizing for deeper flavor.

Worcestershire Sauce

  • Enhances the umami depth of the steak.

Garlic Powder & Paprika

  • Add savory warmth and a hint of smokiness.

Beef Broth

  • Keeps the casserole moist and amplifies the meaty taste.
Sizzling Keto Philly Cheesesteak Casserole Recipe: A Low-Carb Comfort Food Classic
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Sizzling Keto Philly Cheesesteak Casserole Recipe: A Low-Carb Comfort Food Classic

Recipe by Jamie Erin
Servings

6

servings
Prep time

14

minutes
Cooking time

20

minutes
Calories

420

kcal

Ingredients for Sizzling Keto Philly Cheesesteak Casserole Recipe

  • 1.5 lbs ribeye steak, thinly sliced

  • 2 tablespoons olive oil

  • 1 large onion, thinly sliced

  • 1 green bell pepper, sliced

  • 1 red bell pepper, sliced

  • 3 garlic cloves, minced

  • 1 tablespoon Worcestershire sauce

  • 1 teaspoon garlic powder

  • 1 teaspoon smoked paprika

  • ½ cup beef broth

  • 8 slices provolone cheese

  • ½ cup shredded mozzarella (optional, for extra melt)

  • Salt & black pepper to taste

  • Fresh parsley for garnish

Directions for Sizzling Keto Philly Cheesesteak Casserole Recipe

  • Sear the Steak
    Heat olive oil in a large oven-safe skillet over medium-high heat. Season steak with salt, pepper, garlic powder, and paprika. Sear for 2-3 minutes per side until browned but not fully cooked. Remove and set aside.
  • Caramelize the Veggies
    In the same skillet, sauté onions and bell peppers for 5-6 minutes until soft. Add garlic and Worcestershire sauce, cooking for 1 more minute.
  • Deglaze & Combine
    Pour in beef broth, scraping up browned bits. Return steak to the skillet, tossing to combine.
  • Layer with Cheese
    Top the mixture with provolone slices (and mozzarella, if using). Transfer skillet to the oven.
  • Bake to Bubbly Perfection
    Broil on high for 3-5 minutes until cheese is golden and bubbly. Garnish with parsley.

What to Serve with Keto Philly Cheesesteak Casserole

  • Classic Pairing: Cauliflower mash or zucchini noodles for a low-carb base.
  • Fresh Contrast: A crisp side salad with ranch or blue cheese dressing.
  • Game Day Upgrade: Serve with buffalo cauliflower bites and celery sticks.
  • Beverage Match: A dry red wine or iced tea with lemon.

Nutrition Information (Per Serving, Serves 6)

  • Calories: 420
  • Protein: 34g
  • Carbohydrates: 8g (net)
  • Fats: 28g
  • Fiber: 2g
  • Sugar: 4g
  • Sodium: 620mg

How to Store & Reheat

  • Refrigeration: Store in an airtight container for up to 4 days.
  • Freezing: Freeze for up to 3 months; thaw overnight before reheating.
  • Reheating: Warm in the oven at 350°F (175°C) for 10-15 minutes or microwave in intervals.

Final Thoughts

This Sizzling Keto Philly Cheesesteak Casserole is the ultimate comfort food makeover packed with flavor, easy to make, and completely guilt-free. It’s a versatile dish that works for weeknights, meal prep, or entertaining, and it’s sure to satisfy even the most devoted cheesesteak purists. Try adding mushrooms for extra umami or spicy jalapeños for heat. Once you try it, this might just become your go-to keto comfort food.

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