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A delicious Philly Cheesesteak Casserole is pictured as the featured image for this recipe.

Irresistible Philly Cheesesteak Casserole

This Philly Cheesesteak Casserole delivers the classic flavors of the iconic sandwich in an easy-to-make, family-friendly dish. Layers of tender steak, sautéed peppers and onions, and a rich, melted cheese sauce are baked to bubbly perfection. It's a comforting and satisfying meal that's perfect for any occasion.
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Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Servings: 6
Course: Main Course
Cuisine: American
Calories: 650
Ingredients Equipment Method Notes

Ingredients
  

  • 1 pound sirloin steak, thinly sliced
  • 1 large onion, sliced
  • 1 green bell pepper, sliced
  • 1 red bell pepper, sliced
  • 2 cloves garlic, minced
  • 1 tablespoon olive oil
  • 1 teaspoon Worcestershire sauce
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 4 tablespoons butter
  • 4 tablespoons all-purpose flour
  • 3 cups milk
  • 8 ounces cream cheese, softened
  • 4 ounces provolone cheese, shredded
  • 4 ounces mozzarella cheese, shredded
  • 1/4 teaspoon garlic powder
  • Salt and pepper to taste

Equipment

  • large skillet
  • medium saucepan
  • whisk
  • 9x13-inch baking dish
  • spatula
  • Mixing spoons
  • knife
  • cutting board
  • Measuring cups
  • Measuring spoons

Method
 

  1. Preheat oven to 350°F (175°C). Lightly grease a 9x13 inch baking dish.
  2. Heat the olive oil in a large skillet over medium heat. Add the sliced onion and bell peppers and cook until softened, about 5-7 minutes. Add the minced garlic and cook for another minute until fragrant. Remove the vegetables from the skillet and set aside.
  3. In the same skillet, add the thinly sliced steak. Cook until browned and cooked through. Stir in the Worcestershire sauce, salt, and pepper. Add the cooked vegetables back to the skillet with the steak. Stir to combine.
  4. In a medium saucepan, melt the butter over medium heat. Whisk in the flour and cook for 1-2 minutes, stirring constantly, to create a roux.
  5. Gradually whisk in the milk, making sure to smooth out any lumps. Bring the mixture to a simmer, stirring constantly, until it thickens slightly.
  6. Reduce the heat to low and stir in the softened cream cheese until smooth. Add the provolone and mozzarella cheese and stir until melted and creamy. Season with garlic powder, salt, and pepper to taste.
  7. Spread half of the cubed hoagie rolls evenly in the bottom of the prepared baking dish.
  8. Top with the steak and vegetable mixture.
  9. Pour the cheesy sauce evenly over the steak mixture.
  10. Top with the remaining cubed hoagie rolls.
  11. Bake in the preheated oven for 20-25 minutes, or until the casserole is heated through and the top is golden brown and bubbly.
  12. Let the casserole cool for a few minutes before serving.

Notes

You can use ground beef instead of sirloin steak for a budget-friendly option. Feel free to experiment with different types of cheese, such as cheddar, Monterey Jack, or pepper jack. Assemble the casserole ahead of time and refrigerate for up to 24 hours before baking. Sauté sliced mushrooms along with the onions and peppers for an extra layer of flavor. Add a pinch of red pepper flakes or use pepper jack cheese for a spicy kick. For a pizza twist, stir in a can of diced tomatoes with Italian seasoning to the steak mixture. Top with crumbled bacon, sour cream, and chopped chives after baking for a loaded baked potato vibe. Skip the bread altogether for a lower-carb option. If the sauce is too thick, add a little more milk, one tablespoon at a time, until the sauce reaches the desired consistency. If the sauce is too thin, thicken it by creating a slurry with a tablespoon of cornstarch and a tablespoon of cold water. Whisk the slurry into the sauce and simmer for a few minutes until it thickens. Store leftovers in an airtight container in the refrigerator for up to 3 days.