Prime Rib French Dip Sandwiches

Name: Prime Rib French Dip Sandwiches
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Yield: 4 servings
Cuisine: American
Ingredients: 4 lb prime rib roast; salt, to taste; black pepper, to taste; garlic powder, to taste; 1/2 cup compound butter; 1.5 lbs cooked prime rib, thinly sliced; 2 cups au jus; 4 hoagie rolls; 1/4 cup horseradish sauce; 8 slices provolone cheese; 1 cup crispy fried onions

Prime Rib French Dip Sandwiches repurpose leftover prime rib into an elegant, dippable sandwich loaded with thinly sliced beef, melted provolone, and crispy onions served with rich au jus.

🌍American 🏷️French dip 🏷️Sandwich 🏷️Prime rib 🏷️Roast beef Provolone cheese

🏷️

🏷️Au jus

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cookinginthemidwestonTikTok

Total

20 min

Servings

4

Difficulty

Easy

Est. Cost

$22–$36

Recipe Source

View original recipe

From TikTok · by cookinginthemidwest

-0:00

cookinginthemidwestonTikTok

Ingredients

4 lb prime rib roast
salt, to taste
black pepper, to taste
garlic powder, to taste
1/2 cup compound butter
1.5 lbs cooked prime rib, thinly sliced
2 cups au jus
4 hoagie rolls
1/4 cup horseradish sauce
8 slices provolone cheese
1 cup crispy fried onions

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Instructions

1
To cook the prime rib, season the roast with salt, pepper, and garlic powder, then coat it evenly with compound butter.
2
Place the roast in the oven and bake at 500°F for 5 minutes per pound.
3
After the initial high-heat cooking, turn the oven completely off. Leave the roast in the oven with the door closed for 2 hours to finish cooking.
4
Once the roast is cooked and you have leftovers, slice the meat very thinly.
5
In a large skillet over medium heat, warm the au jus. Add the thinly sliced prime rib to the skillet and toss to warm through.
6
Preheat your oven to 400°F. Slice hoagie rolls in half lengthwise and place them on a baking sheet.
7
Spread horseradish sauce on the inside of the rolls.
8
Pile the warm, au jus-soaked beef onto the rolls, followed by slices of provolone cheese and a generous amount of crispy fried onions.
9
Bake the open-faced sandwiches at 400°F until the cheese is fully melted.
10
Serve immediately with a side of the remaining warm au jus for dipping.

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Tips & Notes

Pro tips

Slice the prime rib against the grain when cold for tender, uniform slices that won't shred when dipped in au jus.
Toast the hoagie rolls face-down in a skillet with compound butter until golden and crispy to prevent them from absorbing too much liquid.
Layer the cheese on warm beef so it melts from residual heat before toasting, ensuring even melting throughout the sandwich.
Prepare the au jus separately and keep it warm in a small dish for optimal dipping consistency and temperature control.

Substitutions

Provolone → Swiss cheese (milder flavor, excellent melting point)
Hoagie rolls → crusty Italian bread or ciabatta rolls (similar structure, different texture)
Compound butter → regular butter with minced garlic (simpler preparation, slightly less flavor depth)

Storage & make-ahead

Store sliced prime rib and au jus separately in airtight containers for up to 3 days. Reheat gently on low heat. Assemble sandwiches fresh for best texture.

Common Questions

Can I make French dip sandwiches ahead of time?

Assemble the sandwiches without cheese just before serving, then add provolone and toast. Prepare the au jus and sliced beef separately and store in the refrigerator for up to 3 days.

What's the best way to slice prime rib thin for sandwiches?

Chill the cooked prime rib for at least 2 hours, then use a sharp carving knife or deli slicer to cut against the grain into thin, even slices.

Can I use a different cheese instead of provolone?

Yes. Swiss, mozzarella, or cheddar work well. Choose a cheese that melts smoothly for best results.

How do I reheat the au jus without overcooking the beef?

Warm the au jus gently in a small saucepan over low heat or in the microwave. Dip already-assembled sandwiches briefly or serve the au jus on the side for dipping.