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The Ultimate High Protein Low Carb Philly Cheesesteak Casserole

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  • Prep Time: 25-35 Minutes
  • Cook Time: 30-40 Minutes
  • Total Time: 65 Minutes
  • Yield: 6-8 Servings 1x
  • Category: Low Carbs Meals

Description

How to make a High Protein Low Carb Philly Cheesesteak Casserole with tender steak, peppers, and gooey cheese that’s perfect for meal prep.

Ingredients

Scale
  • Main Components:
  • 1.5 lbs thinly sliced sirloin steak
  • 1 large green bell pepper, thinly sliced
  • 1 large yellow onion, thinly sliced
  • 10–12 slices provolone cheese
  • 2 tablespoons olive oil
  • Flavor Builders:
  • 1/2 cup beef broth
  • 3 cloves garlic, minced
  • 1 tablespoon Worcestershire sauce
  • 4 oz cream cheese, softened
  • 1/4 cup heavy cream
  • Seasonings:
  • 1 teaspoon salt
  • 1/2 teaspoon freshly ground black pepper
  • 1/2 teaspoon dried oregano
  • Finishing & Toppings:
  • 2 tablespoons fresh parsley, chopped
  • 1 cup shredded mozzarella cheese

Instructions

  1. Prep Steak & Veggies: Heat olive oil in a large skillet over medium-high heat. Sauté the thinly sliced onions and bell peppers until softened, then remove them and set aside. Brown the thinly sliced sirloin steak in the same skillet until no longer pink, forming a flavorful base.
  2. Build Flavor: Return the softened veggies to the skillet with the browned steak. Add the minced garlic, salt, pepper, and dried oregano. Stir well and cook for 1 minute until fragrant. This ensures every bite of your High Protein Low Carb Philly Cheesesteak Casserole is packed with delicious flavor.
  3. Create Cream Sauce: Pour in the beef broth and Worcestershire sauce, scraping up any browned bits from the bottom of the pan. Reduce the heat to low, then stir in the softened cream cheese and heavy cream until the sauce is smooth and beautifully emulsified.
  4. Assemble Casserole: Transfer the flavorful steak and sauce mixture into a 9×13 inch baking dish, spreading it evenly. Arrange the 10-12 slices of provolone cheese over the top, ensuring the entire mixture is covered for a gooey layer.
  5. Bake Provolone: Bake the casserole in a preheated oven at 375°F (190°C) for 20 minutes. The provolone cheese will become beautifully bubbly and melted, creating that iconic gooey texture for your High Protein Low Carb Philly Cheesesteak Casserole. Don’t overbake!
  6. Finish Baking: Remove the casserole from the oven. Sprinkle the shredded mozzarella cheese generously over the melted provolone. Return to the oven for an additional 10-15 minutes, or until the mozzarella is golden brown and perfectly bubbly and irresistible.
  7. Garnish & Serve: Let the High Protein Low Carb Philly Cheesesteak Casserole rest for a few minutes after baking to set. Garnish with fresh chopped parsley for a pop of color and freshness. Slice and serve this comforting meal warm to enjoy.

Notes

Avoid overbaking provolone cheese; it becomes rubbery instead of perfectly gooey. Trust the baking times.

Store High Protein Philly Casserole leftovers in an airtight container, refrigerated for 3-4 days for freshness.

Substitute provolone with sliced white American or Monterey Jack cheese for a similar gooey texture.

Serve warm, paired with steamed green beans or asparagus to balance the casserole’s richness.

Prep steak and veggie mixture up to two days ahead; assemble and bake with fresh cheese for best results.

**Allergy Information:** Dairy

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Find it online: https://www.tastecurious.com/the-ultimate-high-protein-low-carb-philly-cheesesteak-casserole/