Embark on a culinary journey with a heartwarming Philly Cheese Steak Casserole recipe that encapsulates the essence of the beloved sandwich in an easy, oven-baked delight. This dish is the epitome of comfort food, combining succulent slices of beef, gooey melted cheese, and the sweet caramelization of onions and peppers.

Each bite offers a harmonious blend of flavors, lovingly encased in a casserole that promises to be the centerpiece of any family dinner or casual get-together. It’s a recipe that not only satisfies hunger but also warms the soul with its familiar yet unique taste profile.

Ingredients Needed for This Recipe

1 1/2 lbs flank steak, thinly sliced against the grain
2 tablespoons olive oil, divided
1 large onion, thinly sliced

2 bell peppers, any color, thinly sliced
8 oz mushrooms, sliced (optional)
2 cloves garlic, minced

1/2 teaspoon salt
1/4 teaspoon black pepper
1 teaspoon Italian seasoning

1/4 cup beef broth
1 tablespoon Worcestershire sauce
8 oz provolone cheese, sliced

4 large eggs
1 cup heavy cream
1/2 cup grated Parmesan cheese

Instructions for Making Philly Cheese Steak Casserole

Preheat your oven to 350°F (175°C). This ensures that our casserole will cook evenly and come out perfectly.
Prepare the beef: Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Add the thinly sliced flank steak and cook until browned, about 3-4 minutes. Season with salt and pepper to taste. Once cooked, remove the steak from the skillet and set it aside in a large mixing bowl.
Sauté the veggies: In the same skillet, add the remaining olive oil, sliced onions, bell peppers, and mushrooms (if using). Cook until the vegetables are just tender, about 5 minutes. Add the minced garlic, Italian seasoning, beef broth, and Worcestershire sauce, and cook for an additional 2 minutes. The aroma will be incredible!

Combine steak and veggies: Add the sautéed vegetables to the bowl with the browned steak. Toss everything together until well mixed.
Layer in a baking dish: Transfer the steak and vegetable mixture to a greased 9×13 inch baking dish. Layer the slices of provolone cheese over the top, covering the mixture evenly.
Mix eggs and cream: In a separate bowl, whisk together the eggs, heavy cream, and grated Parmesan cheese. Season with a little more salt and pepper. Pour this mixture evenly over the cheese layer in the baking dish.

Bake: Place the casserole in the preheated oven and bake for about 25-30 minutes, or until the top is golden brown and the egg mixture has set.
Cool and serve: Let the casserole cool for a few minutes before slicing. This rest period allows everything to set up nicely, making it easier to serve.

Tips for Perfecting the Recipe

Slice the Steak Thinly: The key to a tender bite in this casserole is slicing your flank steak as thinly as possible. Freezing the steak for about 30 minutes before slicing can make this process much easier, as it firms up the meat, allowing for cleaner cuts.

Season at Every Step: Building flavor is all about layering your seasonings. Don’t hesitate to season your steak while cooking, and then again adjust the seasoning after adding the vegetables. Taste as you go to ensure the perfect balance of flavors.

Use Good Quality Cheese: The cheese is a star player in this dish, so opting for a good quality provolone can make a big difference. If you’re a cheese lover, feel free to experiment with a mix of provolone and mozzarella for a gooier texture, or even a bit of sharp cheddar for a deeper flavor.

Don’t Skip the Resting Time: Allowing the casserole to rest for a few minutes after baking is crucial. This step lets the ingredients settle and solidify, making it easier to cut into servings without falling apart.

Prep Ahead: The beauty of this casserole is that you can prepare most of it in advance. You can cook the steak and vegetables and assemble the casserole a day ahead. Just cover and refrigerate. When you’re ready to eat, add the egg and cream mixture, and bake as directed. This makes it a perfect dish for busy weeknights or entertaining.

Serving Suggestions

Side Salad: A simple green salad with a zesty dressing can balance the richness of the casserole beautifully. Think arugula or mixed greens with a balsamic vinaigrette.

Crusty Bread: Serve your casserole with slices of warm, crusty bread. It’s perfect for scooping up any delicious bits and soaking up the creamy sauce.

Roasted Vegetables: For a heartier accompaniment, consider serving roasted vegetables like asparagus, Brussels sprouts, or carrots. Their natural sweetness and char are a great complement to the savory casserole.

Garlic Mashed Potatoes: If you’re looking for comfort on comfort, garlic mashed potatoes are your go-to. They pair wonderfully with the meaty, cheesy filling of the casserole.

A Glass of Red Wine: A medium-bodied red wine such as Merlot or a lighter Pinot Noir pairs wonderfully with the robust flavors of the Philly Cheese Steak Casserole.

Frequently Asked Questions

Can I use a different type of meat? Absolutely! While flank steak is traditional for its flavor and tenderness, you can also use thinly sliced ribeye, sirloin, or even ground beef in a pinch. The key is to cook it properly to maintain tenderness.

What if I don’t like mushrooms or peppers? The beauty of this casserole is its versatility. Feel free to omit any vegetables you don’t like or replace them with others you prefer. Consider adding spinach, diced tomatoes, or artichokes for a twist.

Can this casserole be made ahead of time? Yes, it’s a great make-ahead dish. You can prepare the layers up until the egg and cream mixture is added, cover, and refrigerate overnight. When you’re ready to bake, add the egg mixture and bake according to the instructions. Just remember it might need a few extra minutes in the oven if it’s cold from the fridge.

Is this recipe freezer-friendly? This casserole can be frozen before baking. Assemble the casserole without the egg and cream mixture, wrap tightly, and freeze. Thaw in the refrigerator overnight before adding the egg mixture and baking. Note that the texture of the vegetables might change slightly upon freezing and thawing.

How do I store leftovers? Leftover Philly Cheese Steak Casserole can be stored in an airtight container in the refrigerator for up to 3-4 days. Reheat in the microwave or oven until heated through. The casserole may also be frozen in individual portions for a quick and easy meal later on.

Philly Cheese Steak Casserole

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Embark on a culinary journey with a heartwarming Philly Cheese Steak Casserole recipe that encapsulates the essence of the beloved sandwich in an easy, oven-baked delight.

Ingredients

1 1/2 lbs flank steak thinly sliced against the grain
2 tablespoons olive oil divided

1 large onion thinly sliced
2 bell peppers any color, thinly sliced
8 oz mushrooms sliced (optional)

2 cloves garlic minced
1/2 teaspoon salt
1/4 teaspoon black pepper

1 teaspoon Italian seasoning
1/4 cup beef broth
1 tablespoon Worcestershire sauce

8 oz provolone cheese sliced
4 large eggs
1 cup heavy cream

1/2 cup grated Parmesan cheese

Instructions

Preheat your oven to 350°F (175°C). This ensures that our casserole will cook evenly and come out perfectly.
Prepare the beef: Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Add the thinly sliced flank steak and cook until browned, about 3-4 minutes. Season with salt and pepper to taste. Once cooked, remove the steak from the skillet and set it aside in a large mixing bowl.

Sauté the veggies: In the same skillet, add the remaining olive oil, sliced onions, bell peppers, and mushrooms (if using). Cook until the vegetables are just tender, about 5 minutes. Add the minced garlic, Italian seasoning, beef broth, and Worcestershire sauce, and cook for an additional 2 minutes. The aroma will be incredible!
Combine steak and veggies: Add the sautéed vegetables to the bowl with the browned steak. Toss everything together until well mixed.
Layer in a baking dish: Transfer the steak and vegetable mixture to a greased 9×13 inch baking dish. Layer the slices of provolone cheese over the top, covering the mixture evenly.

Mix eggs and cream: In a separate bowl, whisk together the eggs, heavy cream, and grated Parmesan cheese. Season with a little more salt and pepper. Pour this mixture evenly over the cheese layer in the baking dish.
Bake: Place the casserole in the preheated oven and bake for about 25-30 minutes, or until the top is golden brown and the egg mixture has set.
Cool and serve: Let the casserole cool for a few minutes before slicing. This rest period allows everything to set up nicely, making it easier to serve.