Sourdough Philly Cheesesteak Sandwich Recipe
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Sourdough Philly Cheesesteak
Tender seasoned beef, caramelized onions and peppers, and plenty of gooey melted cheese piled high on crispy sourdough. A seriously satisfying sourdough twist on the cheesesteak.
Some sandwiches whisper. A cheesesteak shows up with beef, onions, peppers, melted cheese, and absolutely no intention of being subtle.
This Sourdough Philly Cheesesteak takes thinly sliced beef and cooks it quickly with sweet onions and bell peppers, then covers the whole situation in melted provolone before piling it onto golden toasted sourdough.
The sourdough brings a tangy, chewy contrast to the rich beef and cheese, while the toasted crust gives the filling enough structural support to remain a sandwich instead of becoming a skillet meal halfway through lunch.
🥩 Sourdough Philly Cheesesteak
Thinly sliced beef, caramelized onions, peppers, melted provolone, and crispy toasted sourdough.
🥪 Ingredients
- 4 thick slices sourdough bread
- 10 ounces ribeye, sirloin, or shaved beef, very thinly sliced
- 1 medium yellow onion, thinly sliced
- 1 small green bell pepper, thinly sliced
- 1 small red bell pepper, thinly sliced, optional
- 4 slices provolone cheese
- 1 tablespoon olive oil
- 1 tablespoon butter
- 1 teaspoon Worcestershire sauce
- 1/2 teaspoon garlic powder
- 1/2 teaspoon kosher salt, divided
- 1/2 teaspoon freshly ground black pepper, divided
- 1 tablespoon softened butter or olive oil for toasting the bread
🔥 How to Make It
-
Slice the beef thin.
If you're slicing the beef yourself, place it in the freezer for about 20–30 minutes first. Slightly firm beef is much easier to slice paper-thin without beginning a personal feud with your knife. -
Cook the onions and peppers.
Heat the olive oil and butter in a large skillet over medium heat. Add the onion and peppers with a small pinch of salt and cook for about 8–10 minutes, stirring occasionally, until softened and lightly caramelized. -
Move the vegetables aside.
Push the onions and peppers to one side of the skillet. Increase the heat to medium-high. -
Cook the beef quickly.
Add the thinly sliced beef in an even layer. Season with garlic powder, the remaining salt, and black pepper. Let it sear briefly, then stir and cook for about 2–4 minutes until just cooked through. -
Bring everything together.
Stir the onions and peppers into the beef and add the Worcestershire sauce. Cook for another 30 seconds so everything gets friendly. -
Melt the cheese.
Divide the beef mixture into two piles in the skillet. Lay two slices of provolone over each pile and cover for 30–60 seconds, until the cheese is melted and gloriously involved. -
Toast the sourdough.
Lightly butter or brush the sourdough with olive oil and toast until golden and crisp around the edges. -
Build the sandwiches.
Divide the cheesy beef, onions, and peppers between two slices of toasted sourdough. -
Close and serve.
Top with the remaining sourdough slices, press gently, slice, and serve immediately while everything is hot and melty.
🥩 Thin Beef Is the Whole Game
Cheesesteak beef should cook quickly and stay tender, which is why very thin slices matter.
If you're cutting your own steak, chill it in the freezer briefly before slicing. The firmer texture makes it much easier to get thin pieces.
Thick chunks of beef can still taste good, but at that point the sandwich has started wandering toward steak sandwich territory.
🍞 Why Sourdough Works with Cheesesteak
Beef, caramelized vegetables, and melted cheese make a rich sandwich. Sourdough adds the acidity and chew that keep all that richness balanced.
Toasting it gives you crisp edges without losing the sturdy crumb that helps contain the juicy beef and melted provolone.
This is exactly the kind of filling that tests bread's commitment to the job.
Sourdough shows up prepared.
🏆 Four Ways to Make It Better
🥩 Slice Across the Grain
If you're using steak instead of shaved beef, slice across the grain so every bite stays tender instead of turning into a tug-of-war.
🧅 Give the Onions Time
Letting the onions soften and caramelize brings sweetness that balances the beef, cheese, and peppers.
🧀 Melt the Cheese on the Beef
Melting the provolone directly over the hot beef mixture gives you much better coverage than adding cold cheese during assembly.
🔥 Don't Overcook the Beef
Thin beef cooks very quickly. Get some browning, cook it through, and get it off the heat before it becomes dry.
🤤 Cheesesteak Variations
The basic beef, onion, pepper, and cheese combination gives you plenty of room to make this one your own.
- Swap provolone for white American cheese
- Add sautéed mushrooms
- Add pickled jalapeños
- Use only onions if peppers aren't your thing
- Add roasted garlic
- Add hot cherry peppers
- Add a thin layer of horseradish mayo
- Use leftover steak sliced very thin
🐿️ Squirrelly Girl Warning
Melted cheese has a special ability to convince beef and onions that they no longer need to remain inside the sandwich.
Use both hands. Keep the plate close. Do not challenge gravity unnecessarily.
🥪 Keep Exploring the Squirrelly Girl Sandwich Series
If big, cheesy beef sandwiches on sourdough are your thing, these belong next.
Juicy sliced steak, sweet caramelized onions, melted cheese, and crispy sourdough. 🌶️ Roast Beef & Horseradish Sourdough Sandwich
Tender roast beef, creamy horseradish sauce, melted cheese, and fresh greens. 🥣 French Dip on Sourdough
Roast beef, melted cheese, caramelized onions, and rich au jus for dipping. 🥪 Explore the Entire Squirrelly Girl Sandwich Series
Browse all our sourdough sandwich recipes and find your next lunch obsession.
🐿️ Want to Make the Sourdough Too?
A cheesesteak this loaded deserves bread with enough flavor, chew, and structure to keep up. Start baking your own with Squirrelly Girl Sourdough Starter.
Meet Squirrelly Girl Starter →