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A delicious Philly Cheesesteak Casserole is shown as the featured image for a recipe article.

EASY PHILLY CHEESESTEAK CASSEROLE KETO

This easy Philly Cheesesteak Casserole captures the classic flavors of the iconic sandwich without the bread. It's a delicious and satisfying keto-friendly meal perfect for a crowd or a weeknight dinner.
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Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Servings: 6
Course: Main Course
Cuisine: American
Calories: 450
Ingredients Equipment Method Notes

Ingredients
  

  • 1.5 lbs thinly sliced steak ribeye or sirloin
  • 1 large onion, thinly sliced
  • 1 green bell pepper, thinly sliced optional
  • 8 oz sliced mushrooms optional
  • 4 tbsp olive oil, divided
  • 2 cloves garlic, minced
  • 1 tsp dried oregano
  • 1/2 tsp salt or to taste
  • 1/4 tsp black pepper or to taste
  • 8 oz provolone cheese, sliced
  • 4 oz cheese sauce optional, for extra richness
  • Chopped fresh parsley, for garnish optional

Equipment

  • large skillet
  • 9x13-inch baking dish
  • knife
  • cutting board
  • Measuring spoons
  • Measuring cups
  • Slotted spoon

Method
 

  1. Preheat oven to 375°F (190°C).
  2. Heat 2 tablespoons of olive oil in a large skillet over medium-high heat.
  3. Add the sliced steak and sear in batches until browned on all sides. Be careful not to overcrowd the pan. Remove steak and set aside.
  4. Add the remaining 2 tablespoons of olive oil to the skillet.
  5. Add the sliced onion and cook until softened and caramelized, about 10-15 minutes.
  6. Add the bell pepper and mushrooms (if using) and cook for another 5 minutes, until softened.
  7. Stir in the minced garlic, oregano, salt, and pepper. Cook for 1 minute more, until fragrant.
  8. Return the seared steak to the skillet with the vegetables. Toss to combine.
  9. Transfer the mixture to a greased 9x13 inch baking dish.
  10. Top with slices of provolone cheese.
  11. If using, drizzle cheese sauce evenly over the provolone.
  12. Bake for 20-25 minutes, or until the cheese is melted and bubbly.
  13. Let stand for 5-10 minutes before serving. Garnish with fresh parsley, if desired.

Notes

For best results, use thinly sliced ribeye or sirloin steak. Pre-searing the steak and caramelizing the onions are key to developing the flavor. To avoid a soggy casserole, pre-cook the vegetables and use a slotted spoon to transfer the steak and vegetables to the baking dish. Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave.