French Lunch

French Dip Sandwich: Slow Cooked Beef with Au Jus

French Dip Sandwich: Slow Cooked Beef with Au Jus

Traditional French dips rely on precise roasting and manual carving to maintain meat texture. You use a slow cooker french dip sandwich method to break down the connective tissue in a beef chuck roast over several hours. This approach ensures the meat remains moist and fragrant without the need for constant monitoring. It allows the flavours of the onion soup mix and beef broth to penetrate the meat deeply.

You achieve a rose-red broth and melt-away meat that pulls apart with a fork. The result depends on the sear you create in the skillet. Sear the roast on each side for 3 min to form a golden-brown crust. This caramelisation adds a savoury depth to the au jus. You finish the dish under a broiler at 200°C (400°F) to melt the provolone and crisp the edges of the ciabatta rolls.

French Dip Sandwich: Slow Cooked Beef with Au Jus

Recipe card
Prep 15 min
Cook 8 hr
Total 8 hr 15 min
Sandwiches 6

Ingredients

Watch how it's made

Instructions

  1. Season the roast

    Apply the sea salt, black pepper and onion soup mix to all sides of the beef. Pat the seasoning in with your fingers. This ensures the flavours penetrate the meat during the long cook.

    French Dip Sandwich: Slow Cooked Beef with Au Jus – step 1: Season the roast
  2. Sear the beef

    Heat 10 ml of olive oil in a large non-stick skillet over high heat until shimmering. Sear the roast for 3 min per side until a golden-brown crust forms. This caramelisation creates a deeper savoury profile.

    French Dip Sandwich: Slow Cooked Beef with Au Jus – step 2: Sear the beef
  3. Slow cook the meat

    Add onion, garlic, beef broth, water, grape juice, tomato paste, thyme, soy sauce and smoked paprika to the slow cooker. Place the seared roast into the liquid. Cover and cook on low for 8 hours or high for 4 h 30 min until the beef pulls apart easily.

    French Dip Sandwich: Slow Cooked Beef with Au Jus – step 3: Slow cook the meat
  4. Shred the beef

    Remove the roast to a cutting board and let it rest for 10 min. Shred the meat with two forks and discard any attached fat. Resting prevents the juices from escaping too quickly.

    French Dip Sandwich: Slow Cooked Beef with Au Jus – step 4: Shred the beef
  5. Reduce the au jus

    Transfer the cooking liquid to a saucepan and bring to a gentle boil. Reduce the liquid by half over 15 min to concentrate the flavours. This produces a silky, intense broth for dipping.

    French Dip Sandwich: Slow Cooked Beef with Au Jus – step 5: Reduce the au jus
  6. Assemble the sandwiches

    Stir the shredded beef into the reduced au jus. Preheat the oven broiler to 200°C (400°F). Slice the rolls, add a slice of provolone, spoon over the beef, and close the sandwich.

    French Dip Sandwich: Slow Cooked Beef with Au Jus – step 6: Assemble the sandwiches
  7. Broil and serve

    Place the sandwiches on a baking sheet and broil for 2–3 min. Stop when the cheese melts and the bread edges are golden. Serve immediately with a bowl of au jus and optional parsley.

    French Dip Sandwich: Slow Cooked Beef with Au Jus – step 7: Broil and serve
Cook’s note.

Watch the au jus closely during the reduction phase. If you boil it too vigorously or for too long, the salt concentrates excessively and the liquid becomes overly salty. Taste the broth frequently after 10 minutes to ensure the balance remains savoury rather than salty.

How it differs from the traditional method

Slow cooking ensures the beef chuck roast becomes tender over 8 hours. Traditional oven roasting provides a firmer texture and faster result. Use the oven if you require a sliced presentation rather than shredded meat. The slow cooker method creates a more concentrated au jus through prolonged simmering.

Storing and reheating

Keep refrigerated leftovers for up to 4 days. Do not leave cooked sandwiches at room temperature for more than 2 hours. Freeze extra portions in airtight containers for several months. Thaw them overnight in the refrigerator and reheat gently in a slow cooker or 180°C (350°F) oven.

Nutrition per serving

Calories
680
Protein
52.4 g
Carbs
38.2 g
Fat
31.5 g
Fiber
3.1 g
Sugar
6.8 g

Estimated, and offered as a guide rather than a medical figure.

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Questions people ask

How do I make French Dip in a crockpot?

Sear a seasoned beef chuck roast in a skillet first. Place it in the crockpot with beef broth, water, grape juice, and aromatics. Cook on low for 8 hours until the meat shreds easily, then reduce the cooking liquid for the dipping sauce.

Can you make French Dip in a slow cooker?

Yes. A slow cooker is ideal for this dish because the low, steady heat breaks down the connective tissue in the chuck roast. This results in melt-away meat and a rich, savoury broth that is difficult to achieve quickly.

How to make French Dip quickly?

Use the high setting on your slow cooker to reduce the cooking time to 4 h 30 min. Ensure the beef remains mostly submerged in the liquid to prevent it from drying out during the faster cooking process.

Mary C. Rivero

About the author

Mary C. Rivero

Mary C. Rivero specializes in comforting home‑cooked meals, from hearty pastas and sheet‑pan dinners to quick weeknight snacks. Her recipes feature clear, step‑by‑step directions and practical tips, helping readers create flavorful dishes with confidence and ease.

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