Why You’ll Love This Recipe

I love this recipe because it transforms leftover prime rib into an incredibly flavorful meal with very little effort. The beef stays juicy, the toasted bread adds the perfect crunch, and the melted cheese brings everything together. I also appreciate how the warm au jus makes every bite even more satisfying. Whether I’m making lunch or a casual dinner, this sandwich is always a crowd-pleaser.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

1 pound cooked prime rib, thinly sliced
4 hoagie rolls or French sandwich rolls
4 slices provolone cheese
2 tablespoons butter
2 teaspoons olive oil
1 small onion, thinly sliced
2 cloves garlic, minced
3 cups beef broth
1 tablespoon Worcestershire sauce
1 teaspoon fresh thyme leaves (or ½ teaspoon dried thyme)
Salt, to taste
Black pepper, to taste
Fresh parsley, chopped, for garnish (optional)

Directions

I heat the butter and olive oil in a skillet over medium heat.
I cook the sliced onion until it becomes soft and lightly caramelized, then stir in the garlic and cook for another minute.
I add the beef broth, Worcestershire sauce, and thyme, then season with salt and black pepper.
I let the mixture simmer for about 10 minutes to develop the flavors and create a rich au jus.
I gently warm the sliced prime rib in the simmering broth for 1 to 2 minutes without overcooking it.
I split the hoagie rolls and lightly toast them until golden.
I pile the warm prime rib onto each roll and top with a slice of provolone cheese.
I place the sandwiches under the broiler for 1 to 2 minutes until the cheese melts.
I garnish with fresh parsley if I like and serve each sandwich with a small bowl of the warm au jus for dipping.

Servings and Timing

Servings: 4
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes

Variations

I add sautéed mushrooms for extra earthy flavor.
I substitute Swiss, mozzarella, or white cheddar for the provolone.
I spread a thin layer of horseradish sauce on the rolls for a spicy kick.
I caramelize extra onions for additional sweetness.
I add roasted peppers for a colorful and flavorful twist.
I use ciabatta rolls instead of hoagie rolls for a chewier texture.

Storage/Reheating

I store the leftover beef and au jus separately in airtight containers in the refrigerator for up to 3 days. I keep the rolls separate to prevent them from becoming soggy. When I’m ready to serve the leftovers, I gently reheat the beef in the warm au jus over low heat until just heated through. I toast fresh rolls, assemble the sandwiches, and melt the cheese before serving. If I freeze the beef and au jus, I store them for up to 2 months and thaw them overnight in the refrigerator before reheating.

FAQs

Can I make this recipe without leftover prime rib?

Yes. I can use freshly cooked prime rib, deli roast beef, or leftover roast beef if I don’t have leftover prime rib available.

What is the best cheese for a French Dip sandwich?

I like provolone because it melts beautifully, but Swiss, mozzarella, Monterey Jack, or white cheddar are also excellent choices.

Can I prepare the au jus ahead of time?

Yes. I often make the au jus a day in advance and store it in the refrigerator. I simply reheat it before warming the beef.

How do I keep the prime rib tender?

I gently warm the beef in the hot au jus instead of boiling it. This keeps the meat juicy and prevents it from becoming tough.

What sides go well with Prime Rib French Dip?

I enjoy serving this sandwich with French fries, potato wedges, coleslaw, a crisp green salad, roasted vegetables, or kettle chips for a complete meal.

Conclusion

I always enjoy making this Prime Rib French Dip because it’s a delicious way to transform leftover prime rib into an unforgettable meal. The tender beef, melted cheese, toasted rolls, and flavorful au jus create a sandwich that feels both comforting and indulgent. Whether I’m serving it for lunch, dinner, or game day, this recipe is one I come back to whenever I have leftover prime rib on hand.

Prime Rib French Dip Recipe

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This Prime Rib French Dip transforms leftover prime rib into a restaurant-worthy sandwich with tender beef, melted provolone, and toasted rolls served alongside a rich, savory au jus. It’s a quick and satisfying meal that’s perfect for lunch, dinner, or game day.

Author: Laura
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
Yield: 4 servings
Category: Main Course
Method: Stovetop
Cuisine: American
Diet: Low Calorie

Instructions

Heat the butter and olive oil in a skillet over medium heat.
Add the sliced onion and cook until soft and lightly caramelized. Stir in the garlic and cook for 1 minute.
Pour in the beef broth, Worcestershire sauce, and thyme. Season with salt and black pepper, then simmer for about 10 minutes.
Gently warm the sliced prime rib in the simmering au jus for 1 to 2 minutes without overcooking.
Split the hoagie rolls and toast until lightly golden.
Fill each roll with warm prime rib and top with a slice of provolone cheese.
Place the sandwiches under the broiler for 1 to 2 minutes, or until the cheese is melted.
Garnish with chopped parsley if desired and serve immediately with small bowls of warm au jus for dipping.

Notes

Add sautéed mushrooms or extra caramelized onions for additional flavor.
Swap provolone for Swiss, mozzarella, Monterey Jack, or white cheddar.
Spread horseradish sauce on the rolls for a spicy kick.
Store leftover beef and au jus separately in the refrigerator for up to 3 days or freeze for up to 2 months.
Reheat the beef gently in the warm au jus to keep it tender and juicy.

Nutrition

Serving Size: 1 sandwich
Calories: 690 kcal
Sugar: 5 g
Sodium: 1120 mg
Fat: 33 g
Saturated Fat: 14 g
Unsaturated Fat: 16 g
Trans Fat: 0.5 g
Carbohydrates: 40 g
Fiber: 2 g
Protein: 54 g
Cholesterol: 135 mg