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French Dip au Jus

I created this because so many French dip recipes seem bland or rely on a mix. The sandwich and au jus is simple to make and tastes better than a restaurant version. —Lindsay Ebert, Orem, Utah
  • Total Time
    Prep: 30 min. Cook: 8 hours
  • Makes
    8 servings


  • 1-1/2 teaspoons beef base
  • 1 teaspoon dried thyme
  • 1 beef rump roast or bottom round roast (3 pounds), cut in half
  • 1 medium onion, quartered
  • 1/2 cup reduced-sodium soy sauce
  • 2 garlic cloves, minced
  • 1 bay leaf
  • 1/2 teaspoon pepper
  • 8 cups water
  • 2 tablespoons Dijon mustard
  • 2 loaves French bread (1 pound each), split and toasted
  • 12 slices part-skim mozzarella cheese
  • 1 jar (4-1/2 ounces) sliced mushrooms, drained


  • Combine beef base and thyme; rub over roast and place in a 5-qt. slow cooker. Combine the onion, soy sauce, garlic, bay leaf and pepper; pour over roast. Add water.
  • Cover and cook on low for 8-9 hours or until meat is tender. Remove roast to a cutting board; cool slightly. Strain cooking juices, reserving onion; skim fat from juices. Discard bay leaf. Thinly slice meat.
  • To assemble sandwiches, spread mustard over bread. Top each bottom with three slices cheese; layer with beef, remaining cheese, mushrooms and reserved onion. Replace tops. Cut each loaf into four slices; serve with reserved juices.
Editor's Note
Look for beef base near the broth and bouillon.
Nutrition Facts
1 slice with 1 cup juices: 694 calories, 19g fat (9g saturated fat), 125mg cholesterol, 1906mg sodium, 69g carbohydrate (4g sugars, 3g fiber), 59g protein.

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  • Librarian4Him02
    Jun 30, 2019

    No comment left

  • No_Time_To_Cook
    Jan 13, 2019

    Ok.. I made more modifications with the leftovers. Instead of the mustard, I buttered the ciabatta rolls and sprinkled with Johnny's Garlic Spread Seasoning. I think broiled the buns, and then added the shredded roast beef (pre-heated in microwave), mushrooms and mozzarella cheese. Loved them this way.

  • xlsalbums
    Nov 6, 2017

    We liked the flavors! The au jus was perfect right in the crock pot! We'll eat this again.

  • danielleylee
    Mar 22, 2015

    Too easy not to try! Looking to reduce sodium in this recipe try using Kitchen basics very low sodium broth vs the base and decrease some of the water. Make sure to use crusty bread for the sandwich and it does pair well with swiss cheese.

  • Debra47909
    Oct 27, 2014

    For pete's sake, people. If you're that worried about sodium use low-sodium beef base, and in general increase the amount of potassium in your diet to balance out sodium intake...

  • DWare5883
    Jun 29, 2013

    No comment left

  • copelah
    Aug 24, 2012

    No comment left

  • debnbrian
    Sep 10, 2011

    No comment left

  • meggie08
    Sep 2, 2011

    My boyfriend and I absolutely loved this recipe! The only bad part was I had my wisdom teeth taken put yesterday so it was a little hard to eat.. But very juicy and tender meat! We used Hoagie rolls instead.. Delicious :)

  • seattlemom41
    Jul 7, 2011

    If you make this with reduced-sodium beef base (found it on amazon) and low-sodium soy sauce you can save almost 600 mg. of sodium.