Best Easy Philly Cheesesteak Casserole Recipe

Philly cheesesteak casserole captures all the flavors of the iconic sandwich — tender beef, peppers, onions, and melted provolone — in a family-style bake. This high protein dish is a creative, crowd-pleasing weeknight dinner.

Cook 45 min Difficulty NORMAL 390 kcal
#high protein #low carb
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Ingredients
Main ingredients
  • ribeye steak 1.5 lbs
  • green bell pepper 2 pieces
  • yellow onion 1 large
  • cremini mushrooms 8 oz
  • provolone cheese 12 slices
  • cream cheese 4 oz
Seasonings/Sauce
  • olive oil 2 tbsp
  • kosher salt 1 tsp
  • black pepper 0.5 tsp
  • garlic powder 0.5 tsp
Nutrition summary
Carbohydrates 11 g 11%
Protein 31 g 32%
Fat 25 g 57%
Serving size 300g
Cooking steps
  1. 1

    Preheat your oven to 375°F. While it heats, thinly slice the ribeye steak, peppers, onions, and mushrooms, keeping them uniform in size for even cooking.

  2. 2

    In a large skillet over medium-high heat, drizzle olive oil and sear the steak slices for 2-3 minutes just until browned; transfer to a plate so they don't overcook.

  3. 3

    Using the same skillet, add a bit more olive oil if needed and sauté the onions, peppers, and mushrooms with salt and pepper for about 6-7 minutes until softened and lightly caramelized.

  4. 4

    Lower the heat to medium and stir in the cream cheese and garlic powder, blending into the vegetables until creamy and fully incorporated.

  5. 5

    Return the steak to the skillet, mix well to evenly distribute, then transfer all ingredients to a lightly greased 9x13-inch baking dish and spread into an even layer.

  6. 6

    Arrange provolone cheese slices over the top to cover completely. Bake uncovered for 20 minutes, until the cheese is fully melted and bubbling at the edges.

  7. 7

    For a golden finish, broil the casserole for 2-3 minutes, watching carefully so the cheese becomes just golden but not burnt. Let stand 5 minutes before serving for clean slices.

Personalized Q&A
Q. What's the key ingredient in this Philly cheesesteak casserole recipe?
The ribeye steak is the star ingredient, providing the signature tender, beefy flavor that defines this casserole. With provolone cheese, bell peppers, and onions, it closely mimics the classic Philly cheesesteak experience in casserole form.
Q. How do I keep the steak tender and prevent it from overcooking?
Sear the thinly sliced ribeye only briefly—2-3 minutes—over medium-high heat just until browned. Remove it from the pan before baking and return only for final assembly. This ensures the steak remains juicy throughout baking.
Q. How can I avoid a watery casserole or soggy texture?
Sauté the peppers, onions, and mushrooms thoroughly to release excess moisture before adding cream cheese. This step helps concentrate flavors and keeps the casserole firm rather than soggy.
Q. How many calories and protein are in each serving?
Each serving (300 grams) provides about 390 kcal, 31 grams of protein (32%), 11 grams of carbs (11%), and 25 grams of fat (57%), making it a high-protein, low-carb meal.
Q. What makes this dish high protein and low carb?
The generous amount of ribeye steak and provolone cheese ensures high protein content, while the use of vegetables instead of bread keeps carbs low at 11g per serving.
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