French Dip Roast Beef Sandwich with Au Jus

The French Dip Roast Beef Sandwich with Au Jus is a classic comfort food that perfectly balances simplicity and indulgence. Thinly sliced, tender roast beef is piled onto crusty bread and served with a warm, savory au jus for dipping—creating a sandwich that’s juicy, flavorful, and deeply satisfying. Despite its name, the French dip sandwich actually originated in the United States and has since become a beloved diner and bistro staple.

What makes this sandwich truly special is the au jus. Made from beef drippings or a rich broth infused with garlic, onions, and herbs, it elevates a simple roast beef sandwich into something memorable. Whether you’re preparing it for a cozy family dinner, game day, or casual entertaining, this sandwich delivers hearty flavor and irresistible comfort in every bite.

Why I Love This Recipe

I love this recipe because it’s pure comfort food with minimal fuss. The roast beef is tender and flavorful, the bread is warm and crusty, and the au jus adds moisture and richness without heaviness. It feels indulgent but not complicated.

Another reason this recipe stands out is its versatility. You can make it with homemade roast beef for a special meal or use high-quality deli roast beef when you’re short on time. Either way, it always feels satisfying and nostalgic.

Why This Is a Must-Try Dish

• Rich, savory flavors with simple ingredients
• Juicy, tender beef paired with crispy bread
• Perfect for casual dinners or gatherings
• Easy to customize with cheese or toppings
• Comforting, filling, and crowd-pleasing

If you enjoy hearty sandwiches and classic flavors, this French dip is a must-try.

Recipe Overview

• Preparation Time: 15 minutes
• Cooking Time: 45–60 minutes
• Total Time: About 1 hour 15 minutes
• Servings: 4 sandwiches
• Calories: Approximately 520–580 calories per serving

Course: Main Course
Cuisine: American

Ingredients

For the Roast Beef

• 2 lb beef chuck roast or sirloin roast
• 1 tablespoon olive oil
• 1 teaspoon salt
• ½ teaspoon black pepper
• 1 teaspoon garlic powder
• 1 teaspoon dried thyme

For the Au Jus

• 2 tablespoons butter
• 1 small onion, sliced
• 2 cloves garlic, minced
• 2 cups beef broth
• 1 tablespoon Worcestershire sauce
• ½ teaspoon soy sauce (optional)
• Salt and pepper, to taste

For the Sandwiches

• 4 French rolls or hoagie rolls
• 8–10 slices provolone or Swiss cheese (optional)
• Fresh parsley (optional garnish)

Cooking Directions

This recipe involves slow-cooking or roasting the beef until tender, preparing a flavorful au jus, and assembling the sandwiches with warm bread and optional melted cheese.

Step-by-Step Preparation Method

Step 1: Prepare the Beef

Preheat oven to 325°F (165°C). Rub the beef roast with olive oil, salt, pepper, garlic powder, and thyme.

Step 2: Roast the Beef

Place beef in a roasting pan and cook for 45–60 minutes, or until internal temperature reaches desired doneness (135°F for medium-rare). Remove from oven, tent with foil, and let rest for 15 minutes.

Step 3: Make the Au Jus

In a saucepan, melt butter over medium heat. Add onion and sauté until softened. Add garlic and cook until fragrant.

Step 4: Simmer the Au Jus

Pour in beef broth, Worcestershire sauce, and soy sauce. Simmer for 10–15 minutes. Season to taste and strain if desired.

Step 5: Slice the Beef

Thinly slice the rested roast beef against the grain for maximum tenderness.

Step 6: Assemble the Sandwich

Split rolls and lightly toast if desired. Add sliced roast beef and cheese. Place under broiler briefly until cheese melts.

Step 7: Serve with Au Jus

Serve sandwiches hot with small bowls of warm au jus for dipping.

How to Serve

• Serve hot with au jus on the side for dipping
• Pair with fries, chips, coleslaw, or a green salad
• Garnish with fresh parsley or cracked black pepper
• Ideal for lunch, dinner, or casual gatherings

Recipe Tips

• Slice beef very thin for best texture
• Let meat rest before slicing to retain juices
• Use crusty bread to prevent sogginess
• Warm beef slightly in au jus before serving for extra juiciness
• Don’t boil au jus—gentle simmer keeps flavors balanced

Variations

Cheesy French Dip

Add extra provolone, Swiss, or mozzarella and broil until bubbly.

Slow Cooker French Dip

Cook beef with broth and seasonings in slow cooker on low for 8 hours.

Spicy French Dip

Add horseradish, spicy mustard, or chili flakes.

Caramelized Onion Dip

Top sandwiches with caramelized onions for sweetness.

Garlic Butter Rolls

Brush rolls with garlic butter before toasting.

Freezing and Storage Time

Refrigerator

Store beef and au jus separately in airtight containers for up to 4 days.

Freezing

Freeze sliced beef and au jus for up to 3 months. Thaw overnight before reheating.

Reheating

Reheat beef gently in au jus on stovetop or microwave to keep it moist.

Special Equipment Needed

• Roasting pan
• Saucepan
• Sharp knife and cutting board
• Meat thermometer
• Tongs or ladle

Conclusion

The French Dip Roast Beef Sandwich with Au Jus is a timeless classic that delivers bold, savory flavor with every bite. Tender roast beef, crusty bread, and rich au jus come together to create a comforting and satisfying meal that’s perfect for any occasion. Easy to customize, freezer-friendly, and endlessly crave-worthy, this sandwich is a must-have recipe for anyone who loves hearty, classic comfort food.