Philly Cheese Steak Casserole | Real Balanced (2024)

This easy casserole recipe is foolproof.

It’s so easy to make and yields a delicious and filling meal for busy weeknights.

Plus, it stores really well in the refrigerator or the freezer.

💛Why you’ll love this recipe

• Ready in under 1 hour.
• Straightforward ingredients that you may already have on hand.
• Freezes and reheats well for eating later.
• Low-carb, keto-friendly, and gluten-free.

➡️Ingredients

• Sirloin steak
• Unsalted butter
• Minced garlic
• Green bell pepper
• White mushrooms
• Yellow onion
• Egg
• Shredded mozzarella cheese
• Cream cheese
• Pepper
• Salt
• Provolone cheese slices

⏲How to make this Philly cheese steak casserole

This is an overview of the recipe’s instructions. The full instructions can be found in the recipe card at the bottom of this post.

• Slice Steak: Cutting against the grain, slice the steak into thin strips then cut those slices into ½” pieces.
• Preheat Oven: Preheat the oven to 400 degrees and spray a 9×13-inch baking dish with nonstick cooking spray.
• Cook Steak: In a large skillet over medium heat, melt butter. Add minced garlic and heat until fragrant, about 1 minute. Add sliced steak and cook until browned. Transfer the cooked steak to a plate or bowl and set aside. Discard any liquid from the pan.
• Cook Vegetables: To the same skillet over medium-high heat, add peppers, mushrooms, and onions and cook until vegetables are tender and liquid has evaporated, which should take about 5-7 minutes. Remove the skillet from the heat and set aside.
• Mix Ingredients Together: To a mixing bowl, add egg, shredded mozzarella, cream cheese, pepper, and salt, and, using an electric mixer, mix until well combined. Stir in the cooked steak and vegetables.
• Prepare Casserole in Baking Dish and Bake: Transfer the mixture to the prepared baking dish and arrange the provolone cheese slices in an even layer on top of the mixture. Transfer the baking dish to the middle oven rack to bake until the edges of the casserole are golden brown and bubbling, which will take about 25 minutes.
• Serve: Remove the baking dish from the oven and allow the casserole to cool for at least 10 minutes before slicing and serving.

👉Ingredient substitution suggestions

• Sirloin Steak: Ribeye steak, flank steak, strip steak, skirt steak, or even ground beef can be used.
• Unsalted Butter: You can swap salted butter at a 1:1 ratio for unsalted butter. If using salted butter, omit the added salt in the recipe.
• Minced Garlic: Use ½ teaspoon garlic powder.
• Green Bell Peppers: Red, yellow, or orange bell peppers can also be used.
• Provolone Cheese: American, cheddar, or pepper jack slices will work.

✨Variations

• Pour in a little Worcestershire sauce for some added flavor. Mix this in with the cream cheese mixture.
• Add some slices of cheddar cheese to make the casserole even cheesier.

〰️How to serve

• Veggies – Serve with jicama fries or mashed cauliflower.
• Salad – Serve alongside bacon coleslaw or Caesar salad.
• Potatoes – Serve with roasted potatoes, baked fries, air fryer smashed potatoes, or mashed potatoes.

💬 FAQs

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