Philly Cheesesteak Casserole

If you love the bold, savory flavors of a classic Philly cheesesteak sandwich, you’re going to adore this Philly Cheesesteak Casserole. It has all the essentials — tender beef, sautéed peppers and onions, and plenty of melted cheese — baked together into one easy, comforting dish.

Perfect for busy weeknights, low-carb meal plans, or feeding a hungry family, this casserole delivers big flavor with minimal effort.

Why You’ll Love This Recipe

All the classic cheesesteak flavors
Easy one-pan preparation
Family-friendly comfort food
Great for meal prep
Naturally low-carb (no bread needed)

Ingredients

1½ lbs (680g) thinly sliced beef (sirloin, ribeye, or shaved steak)
1 tablespoon olive oil
1 green bell pepper, sliced
1 red bell pepper, sliced
1 medium onion, sliced
2 cloves garlic, minced
1 teaspoon Worcestershire sauce
½ teaspoon salt (or to taste)
½ teaspoon black pepper
4 oz (115g) cream cheese, softened
½ cup (120ml) heavy cream
1½ cups shredded provolone or mozzarella cheese
4–6 slices provolone cheese (for topping)

Step-by-Step Instructions

1. Preheat the Oven

Preheat oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.

2. Cook the Beef

Heat olive oil in a large skillet over medium-high heat.

Add sliced beef and cook until browned, about 3–5 minutes. Season with salt and pepper.

Remove from skillet and set aside.

3. Sauté the Vegetables

In the same skillet, add onions and bell peppers.

Cook for 5–7 minutes until softened.

Add garlic and cook for 30 seconds until fragrant.

Stir in Worcestershire sauce.

4. Make the Creamy Base

Reduce heat to medium-low.

Add cream cheese and heavy cream to the skillet. Stir until smooth and creamy.

Return cooked beef to the skillet and mix well.

Stir in shredded cheese until melted and combined.

5. Assemble the Casserole

Transfer mixture into prepared baking dish.

Top with provolone slices.

6. Bake

Bake uncovered for 20–25 minutes, until cheese is melted and bubbly.

For a golden top, broil for 2–3 minutes at the end.

Tips for the Best Flavor

Use ribeye for the most authentic cheesesteak taste.
Slice beef very thinly for tenderness.
Don’t overcook the beef before baking.
Add mushrooms if you like traditional variations.

Serving Suggestions

Serve this casserole:

With garlic bread
Over rice or pasta
In toasted hoagie rolls
With a fresh green salad
Over cauliflower rice for a low-carb option

Make-Ahead & Storage

Make Ahead: Assemble up to 24 hours in advance and refrigerate before baking.

Store: Keep leftovers in the refrigerator for up to 4 days.

Freeze: Freeze in an airtight container for up to 2 months.

Flavor Variations

Add sliced mushrooms
Use white American cheese for a classic twist
Add jalapeños for heat
Swap beef for ground beef for a budget-friendly version

Final Thoughts

Philly Cheesesteak Casserole takes everything you love about the iconic sandwich and transforms it into a warm, cheesy, fork-friendly comfort dish. It’s rich, hearty, and packed with flavor in every bite.

Easy enough for weeknights, delicious enough for guests — this casserole is guaranteed to become a regular in your dinner rotation.