Jul 14 2026
Restaurants›Mussel & Burger Bar›The Dip Recipe

The Dip Recipe

Inspired by Mussel & Burger Bar
Time30m
Serves4

Thin sliced roast beef, grilled onion and provolone cheese on fresh baguette, served with au jus and creamy horseradish sauce.

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Ingredients

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Main Ingredients

Au Jus

Creamy Horseradish Sauce

Method

Preparing the Ingredients

  1. 1

    Slice the Onion

    Thinly slice the onion and set aside.

  2. 2

    Prepare the Roast Beef

    Gather the thin sliced roast beef and set aside.

  3. 3

    Slice the Baguette

    Cut the fresh baguette in half lengthwise.

Cooking the Onions

  1. 4

    Grill the Onions

    In a skillet over medium heat, add a little oil and sauté the sliced onions until they are soft and caramelized, about 8-10 minutes.

Making the Au Jus

  1. 5

    Combine Ingredients

    In a saucepan, combine the beef broth, soy sauce, garlic powder, and black pepper. Bring to a simmer over medium heat.

  2. 6

    Simmer

    Allow the mixture to simmer for about 10 minutes to blend the flavors. Keep warm until ready to serve.

Making the Creamy Horseradish Sauce

  1. 7

    Mix the Sauce

    In a small bowl, combine the prepared horseradish, sour cream, mayonnaise, lemon juice, and salt. Mix well until smooth. Adjust seasoning to taste.

Assembling the Dip

  1. 8

    Layer Ingredients

    On the bottom half of the baguette, layer the grilled onions, followed by the thin sliced roast beef, and then top with provolone cheese.

  2. 9

    Melt the Cheese

    Place the open sandwich under a broiler for 2-3 minutes until the cheese is melted and bubbly.

  3. 10

    Serve

    Remove from the oven, place the top half of the baguette on, cut into portions, and serve with warm au jus and creamy horseradish sauce on the side.

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