This fabulous Leftover Prime Rib Philly Cheesesteak Sandwich is stacked with sauteed onions, bell peppers, sliced leftover prime rib roast, and topped with provolone and white American cheese. This easy recipe is perfect for using up leftovers and creating a delicious sandwich that everyone loves.
Serve with a fresh green salad and French fries or potato wedges.
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Philly cheesesteaks are traditionally served with thinly sliced rib eye beef, so using your leftover prime rib beef is very close, even better, in both flavor and quality. What a fantastic way to use up your leftover prime rib roast. It's easy, and pairs your delicious leftover beef with sauteed onions and peppers, and melted cheese!
The sandwich has been an iconic part of Philadelphia's history since the 1930's and the exact origin is another one of those stories that will likely never be resolved. You can see the one claimed story per the Visit Philly website and even though wikipedia references a debate over the origin, no other story is mentioned.
Other toppings that are commonly used on 'authentic' cheesesteaks in Philadelphia are fried (or sauteed) onions and provolone cheese or Cheez Whiz, although white American cheese is also offered at vendors throughout Philly in our times.
Bell peppers are commonly used but are not a mainstay of the classic cheesesteak. However, this is an offshoot of the original that is commonly called a 'pepper cheesesteak'.
🥘 Ingredients
- Olive Oil - Extra virgin (EVOO)
- Vegetables - White onion, garlic, bell peppers (both green and red).
- Leftover Prime Rib Roast - You can use leftover roast beef or steak, thin sliced for sandwiches.
- Salt & Pepper (to taste)
- Cheeses - Provolone and white American cheese slices.
- Hoagie or Torpedo Rolls - Sliced lengthwise - toasted, if desired.
- Horseradish Sauce - Optional.
Be sure to see the free printable recipe card below for ingredients, exact amounts & instructions with tips!
🔪How To Make A Leftover Prime Rib Philly
- In a large skillet or frying pan, add olive oil. Bring to a medium high heat, until the oil is shimmering.
- Add sliced onion, minced garlic, and sliced bell peppers. Saute until onion is translucent and peppers are tender, about 5-6 minutes.
- Move sauteed onion and peppers aside. Add the cut leftover prime rib beef slices and heat through, about two minutes. Combine meat and sauteed onion and peppers, then season with salt and pepper.
- Divide the cooked meat into your 4 sandwich portions and top with provolone and white American cheese slices (total 2-3 slices per sandwich). Once the cheese has melted, transfer portions to toasted sandwich rolls using a spatula.
- Top sandwiches with creamy horseradish sauce, if desired.
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❓ Recipe FAQs
Enjoy some of my other fantastic leftover prime rib recipes include the wildly popular recipes for Leftover Prime Rib Beef Stroganoff or the post Christmas breakfast dish, Prime Rib Hash, the rich and hearty Prime Rib Beef Barley Soup with Mushrooms, and my easy to make Prime Rib Tacos.
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📖 Recipe Card
Leftover Prime Rib Philly Cheesesteak Sandwich
Ingredients
- 1 tablespoon olive oil (extra virgin)
- 1 white onion (thinly sliced)
- ½ tablespoon garlic (finely chopped or crushed)
- 1 green bell pepper (thinly sliced, optional)
- 1 red bell pepper (thinly sliced, optional)
- 1 ½ lb leftover prime rib roast (thin sliced for sandwiches)
- salt & pepper (to taste)
- ½ lb provolone cheese slices
- ½ lb white American cheese slices
- 4 hoagie or torpedo rolls (sliced lengthwise - toasted, if desired)
- creamy horseradish sauce (optional, see my recipe)
(Note: 2x or 3x only changes the ingredient list)
Instructions
- In a large skillet or frying pan, add olive oil. Bring to a medium high heat, until the oil is shimmering.
- Add onion, garlic, and bell pepper. Saute until onion is translucent and peppers are tender, about 5-6 minutes.
- Move sauteed onion and peppers aside. Add the cut leftover prime rib beef slices and heat through, about two minutes. Combine meat and sauteed onion and peppers, then season with salt and pepper.
- Divide the cooked meat into your 4 sandwich portions and top with provolone and white American cheese slices (total 2-3 slices per sandwich). Once the cheese has melted, transfer portions to toasted sandwich rolls using a spatula.
- Top sandwiches with creamy horseradish sauce, if desired.
Debbie says
Thank you for sharing this recipe