This casserole takes the core elements of a Philly cheesesteak — thinly sliced beef, sautéed peppers and onions, and a creamy provolone sauce — and bakes them over egg noodles in a single 9×13 dish. It feeds six people without much fuss, and the whole thing is on the table in under an hour. If you need a weeknight dinner that actually satisfies a hungry crowd, this is a solid choice.
Before you start
Two things make or break this dish. First, slice the ribeye as thin as you can — ideally 1/8 inch or less. Partially freezing the steak for 20–30 minutes before cutting makes this much easier with a sharp knife. Thin slices cook in 3–4 minutes and stay tender; thick chunks turn chewy in the oven. Second, cook the egg noodles only to al dente, not fully soft. They continue cooking in the oven for 20–25 minutes, and if they go in already tender they’ll turn mushy by the time the cheese is bubbling. Pull them about a minute before the package says they’re done.
About the ingredients
- Ribeye steak: The fat marbling keeps it from drying out during the oven bake. If you use skirt or flank steak as a swap, slice strictly against the grain or the texture gets tough.
- Cream cheese: It needs to be fully softened before whisking with the milk — cold cream cheese leaves lumps in the sauce that don’t smooth out during baking. Leave it on the counter for at least 30 minutes.
- Provolone vs. mozzarella: Provolone gives a sharper, saltier flavor closer to the original sandwich. Mozzarella melts more smoothly but is noticeably milder — skip the mozzarella swap unless you’re feeding kids who prefer a blander cheese.
- Egg noodles: Wide egg noodles work best here; they hold the sauce without disappearing into it. Medium noodles are fine but the texture is less substantial.
Make-ahead notes
You can assemble the entire casserole up to 24 hours ahead, cover it tightly with foil, and refrigerate it unbaked. Pull it from the fridge 20 minutes before it goes in the oven so it doesn’t go in stone cold, then bake as directed — you may need an extra 5 minutes. Baked leftovers keep well in an airtight container in the fridge for up to 3 days. Reheat portions in a microwave with a splash of milk stirred in to loosen the sauce, or cover the whole dish with foil and warm it in a 325°F oven for 15–20 minutes. For freezing, cool completely, portion into freezer-safe containers, and freeze for up to 2 months; thaw overnight in the fridge before reheating.
Mistakes to avoid
- Crowding the pan when browning the beef: If you add all the steak at once to a home-size skillet, it steams instead of browns. Work in two batches if needed — the extra two minutes is worth it for flavor.
- Skipping the grease on the baking dish: The cheese sauce sticks hard to ungreased ceramic or glass. A light coat of oil or cooking spray saves a lot of scrubbing.
- Not seasoning the vegetables: The recipe seasons the beef, but the peppers and onions need salt too. Add a pinch while they’re sautéing, not just at the end, so the flavor goes into the vegetables rather than sitting on top.
- Letting the cheese sauce sit too long before mixing: Once you combine the cream cheese, milk, and provolone, use it right away. It thickens quickly as it cools and becomes hard to coat the noodles evenly if you leave it sitting while you finish other steps.
- Overbaking: Twenty minutes is usually enough. If the top is golden and the edges are bubbling, pull it out — another 10 minutes dries out the noodles and toughens the beef.
Philly Cheesesteak Beef Casserole
Equipment
Ingredients
- 1 lb ribeye steak - thinly sliced against the grain
8 oz egg noodles - cooked and drained
1 ½ cups provolone cheese - shredded, or mozzarella for a stretchier consistency
- ¼ cup whole milk
Instructions
- Preheat the oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish and set aside.
- Cook egg noodles according to package directions until al dente. Drain, toss with a little olive oil to prevent sticking, and set aside.
- Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Sauté sliced onions and bell peppers until they begin to soften and slightly caramelize, about 6–8 minutes. Set aside in a bowl.
- In the same skillet, add another tablespoon of olive oil and the thinly sliced ribeye steak. Cook just until browned, about 3–4 minutes. Season with salt and pepper.
- In a separate bowl, whisk together softened cream cheese and whole milk until smooth. Add shredded provolone cheese and stir to combine.
- In a large mixing bowl, combine cooked noodles, sautéed vegetables, and steak. Pour cheese mixture over and stir gently until evenly coated.
- Transfer the mixture into the prepared baking dish. Bake uncovered for 20–25 minutes, until bubbly and golden on top.
Notes
- For a spicy twist, add sliced jalapeños or a pinch of red pepper flakes.
- Use skirt or flank steak as a more affordable alternative to ribeye.
Nutrition
Your questions, answered
Can I use ground beef instead of sliced steak?
Yes, ground beef works and is cheaper and faster to cook. Brown it thoroughly to an internal temperature of 160°F (71°C), drain excess fat, then proceed as written. The texture is different — looser and less chewy — but the flavors hold up well.
What internal temperature should the beef reach?
If you’re using sliced steak, cook it until browned through with no pink remaining before it goes into the casserole — the oven bake is not long enough to reliably finish raw beef. If you substitute ground beef, it must reach 160°F (71°C) in the skillet before baking.
Can I double this recipe to feed a bigger group?
Yes — double all ingredients and use two 9×13 dishes rather than one larger vessel. Spreading it too deep in a single pan means the center stays cold while the edges overcook. Rotate the dishes halfway through baking if your oven runs unevenly.
My cheese sauce turned out grainy. What went wrong?
Grainy sauce almost always means the cream cheese wasn’t soft enough before mixing, or the provolone was added to a sauce that got too hot. Make sure the cream cheese is at room temperature and mix the sauce off the heat. Pre-shredded cheese can also cause graininess because of the anti-caking coating — shredding your own from a block gives a smoother result.
Can I add mushrooms to this casserole?
Mushrooms are a good addition, but cook them separately before adding. They release a lot of water, and if you add them raw with the other vegetables that moisture will make the casserole watery. Sauté sliced mushrooms in a dry pan until they’ve released and reabsorbed their liquid, then mix them in with the peppers and onions.
What to cook next
- Ultimate Cheesy Beef Bake
- Hearty Beef Mushroom Stroganoff
- Spicy Beef Stuffed Peppers
- Creamy Beef Spinach Pasta
