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Philly Cheesesteak Casserole

This Philly Cheesesteak Casserole reimagines the iconic sandwich into a comforting, oven-baked dish. Laden with tender sirloin, vibrant sautéed vegetables, and a luscious blend of cheeses, it delivers rich, savory flavors in every bite. Perfect for feeding a crowd or meal prepping for the week.
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Cook Time 25 minutes
Total Time 25 minutes

Ingredients
  

  • 2 large bell peppers sliced
  • 1/4 teaspoon ground black pepper
  • 1 tablespoon unsalted butter
  • 1 cup shredded mozzarella cheese divided
  • 1/2 teaspoon kosher salt
  • 2 cloves garlic minced
  • 1 large onion chopped
  • 1/2 cup cream cheese
  • 2 pounds sirloin steak thinly sliced
  • 1 cup shredded cheddar cheese divided
  • 1/4 cup plus 2 tablespoons half-and-half or heavy cream

Instructions
 

  • Preheat your oven to 350°F (180°C).
  • Place the butter in a non-stick skillet and warm it over medium heat. Once melted and hot, introduce the sliced sirloin steak, seasoning it with salt and pepper. Cook until the meat is browned and no longer pink, then remove it from the pan.
  • Into the same skillet, add the bell peppers, chopped onion, and minced garlic. Sauté for 4 to 5 minutes, or until the vegetables are tender. Stir in the cream cheese and half-and-half, blending thoroughly. Bring the mixture to a gentle simmer and continue cooking for an additional 5 minutes.
  • Return the steak to the skillet and incorporate half of the cheddar and mozzarella cheeses. Mix well to combine.
  • Transfer the combined mixture into a greased 9x13-inch baking dish. Scatter the remaining shredded cheeses over the top.
  • Bake in the preheated oven for 15 to 20 minutes, or until the cheese is melted and golden brown.

Notes

To store, allow the casserole to cool before placing it in an airtight container. Refrigerate for up to 5 days.
For longer storage, freeze in a shallow container for a maximum of 3 months.
Reheat either in a 350°F oven, on the stove over medium-high heat, or in the microwave in 30-second bursts.