Philly Cheesesteak Casserole Recipe With Ground Beef: One-Pan Weeknight Comfort

This one-pan wonder brings all the flavors of a classic Philly cheesesteak together in a comforting casserole that’s perfect for busy weeknights. Browned ground beef replaces traditional steak, making it budget-friendly without sacrificing taste.

The beauty lies in its simplicity: layering caramelized onions and peppers with seasoned beef, then topping everything with melted provolone. It bakes into a gooey, savory masterpiece that’s ready in under an hour.

What emerges from the oven is a bubbling, golden dish with tender beef, sweet peppers, and that signature cheesy pull. Every bite delivers the nostalgic taste of a Philly sandwich, just in fork-friendly form.

Serve it straight from the pan for a meal that feels indulgent but comes together with minimal effort.

Ingredients for Philly Cheesesteak Casserole Recipe with Ground Beef

Simple, hearty ingredients deliver that classic Philly cheesesteak flavor in casserole form for four.

The ground beef is the foundation—opt for 80/20 lean-to-fat ratio from a trusted butcher or Whole Foods for optimal flavor and moisture. Provolone is non-negotiable here; Boar’s Head offers a high-quality pre-sliced option that melts beautifully. For the peppers and onions, choose firm, vibrantly colored produce to ensure sweetness and texture after baking. Avoid pre-shredded cheese, as it contains anti-caking agents that inhibit melting.

No provolone on hand? Mozzarella with a slice of American cheese mimics the gooey texture. Ground turkey can replace beef at a 1:1 ratio for a lighter version. Gluten-free flour works for thickening if needed. For extra depth, add a dash of soy sauce to the beef—it amplifies the umami without overpowering. If you’re out of Worcestershire, a splash of steak sauce (like A1) works in a pinch.

Assemble and bake immediately, or prep ahead and refrigerate for up to 24 hours. Leftovers keep well in the fridge for 3-4 days and reheat beautifully in the microwave or oven. Freeze portions for up to 3 months—thaw overnight before reheating.

Step-by-Step Instructions for Philly Cheesesteak Casserole With Ground Beef

This one-pan method delivers all the classic flavors with minimal cleanup and maximum comfort.

Step 1: Brown and Season the Ground Beef

Heat a large oven-safe skillet over medium-high heat. Add the 1.5 lb ground beef and cook, breaking it apart with a wooden spoon, for 5-7 minutes until no pink remains.

Drain excess fat, leaving about 1 tablespoon in the pan for flavor. Stir in the 1 tbsp Worcestershire sauce, 1 tsp garlic powder, 1 tsp onion powder, 1 tsp salt, 0.5 tsp black pepper, and 0.5 tsp dried oregano. This builds the savory foundation for your casserole.

Step 2: Sauté the Vegetables Until Tender

Add the 2 tbsp butter to the skillet with the beef. Once melted, stir in the 1 whole yellow onion and 2 whole green bell peppers, both thinly sliced. Cook for 6-8 minutes until the vegetables soften and the onions become translucent.

The peppers should maintain some bite but lose their raw crispness. This step ensures the vegetables release their natural sweetness, balancing the rich beef flavor.

Step 3: Create the Sauce and Thicken

Sprinkle the 2 tbsp all-purpose flour evenly over the beef and vegetable mixture. Stir well to coat and cook for 1 minute to remove the raw flour taste.

Pour in the 0.5 cup beef broth and stir, scraping up any browned bits from the bottom of the pan. Simmer for 2-3 minutes until the sauce thickens slightly and coats the back of a spoon. The mixture should be creamy but not soupy.

Step 4: Add Cheese and Finish

Evenly distribute the 8 oz provolone cheese over the top of the beef and vegetable mixture. Cover the skillet and let it sit for 2-3 minutes to allow the cheese to melt completely.

Once melted, remove the lid and place the skillet under a preheated broiler for 1-2 minutes until the cheese is bubbly and begins to turn light golden brown. This final touch adds the signature cheesesteak texture.

Common Mistakes When Making This Dish

Overcooking the Beef

Ground beef for this casserole should be browned just until no pink remains—about 5-7 minutes over medium-high heat. Cooking it longer dries out the meat, leaving your dish tough instead of tender. I always pull it off the heat as soon as it’s done. 🔥

Skipping the Flour

The 2 tbsp flour isn’t just filler—it thickens the sauce so it clings to every bite. Without it, you’ll end up with a watery mess. Stir it in thoroughly and cook for 1 minute to remove the raw taste before adding broth.

Under-Sautéing Veggies

Those 2 bell peppers and 1 onion need 6-8 minutes to soften properly. Raw, crunchy vegetables will ruin the texture. I use butter for richness and extra flavor in the sauté.

Cheese Melting Mistakes

Provolone needs time to melt completely. Covering the skillet for 2-3 minutes after adding the 8 oz cheese ensures even melting. Then, a quick broil for 1-2 minutes gives that golden finish.

Wrong Pan Choice

An oven-safe skillet is non-negotiable here. I love my 12-inch cast iron—it goes from stovetop to broiler seamlessly. Non-oven-safe pans will leave you scrambling to transfer everything mid-recipe.

Seasoning Last

Add those spices—garlic powder, onion powder, salt, pepper, and oregano—while browning the beef. This layers the flavors so every bite tastes intentional, not like an afterthought. 💡

Frequently Asked Questions