French Dip Sandwiches with Au Jus Sauce
A warm French Dip Sandwich with a side of au jus. It's easy to turn leftover roast beef into one of the worlds most loved sandwiches.
Ingredients
- 1-1½ lbs roast beef, sliced
- 4 French bread rolls
- 8 slices Provolone cheese
- 4 tbsp Horseradish sauce, optional
For the Au Jus Sauce:
- 1 tbsp olive oil
- ½ cup yellow onion, finely diced
- 2 cloves garlic, minced
- 2 cans beef broth
- 2 tbsp Worcestershire sauce
- 1 tbsp low sodium soy sauce
- 2 tsp beef bullion
- 1 tsp onion powder
- 1 tbsp cornstarch
- ¼ cup cold water
- salt and pepper, to taste
Instructions
- In a large sauce pan, heat olive oil.
- Add minced onion and sauté until onion is soft and translucent, about 4-5 minutes.
- Add minced garlic and cook until fragrant, about 1 minute.
- To the saucepan, add beef broth, Worcestershire sauce, soy sauce, beef bullion and onion powder.
- Stir to combine and increase heat. Bring sauce to boil. Simmer for 4-5 minutes.
- In a small bowl, combine cornstarch and cold water to make a slurry.
- Add slurry to the au jus sauce. Simmer until sauce thickens slightly.
- Taste and season with salt and pepper.
- Add sliced roast beef to the saucepan and simmer till beef is hot. Cover and turn off heat.
- Cut rolls in half, lengthwise.
- Spread with horseradish sauce if desired.
- Place sliced cheese on cut sides of the bread.
- Set oven to broil and toast bread until cheese is melted and bubbly.
- Add warm roast beef slices to cheesy bread.
- Serve with a side of au jus sauce for dipping.