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Flank Steak with Horseradish Sauce

An overnight marinade performs double duty, gently flavoring and tenderizing this lean cut of beef. It can be grilled to perfection in only minutes.
  • Total Time
    Prep: 10 min. + marinating Grill: 15 min.
  • Makes
    4 servings


  • 1 beef flank steak (1 pound)
  • 3 tablespoons lemon juice
  • 2 tablespoons Dijon mustard
  • 2 tablespoons Worcestershire sauce
  • 2 garlic cloves, minced
  • 1/8 teaspoon hot pepper sauce
  • 1/4 cup fat-free mayonnaise
  • 1/4 cup reduced-fat sour cream
  • 1 tablespoon Dijon mustard
  • 2 green onions, finely chopped
  • 2 teaspoons prepared horseradish


  • Using a sharp knife, score the surface of the steak with shallow diagonal cuts at 1-in. intervals, making diamond shapes. Repeat on other side.
  • In a large resealable plastic bag, combine the next five ingredients. Add steak. Seal bag and turn to coat; refrigerate for 8 hours or overnight. Combine the sauce ingredients in a small bowl; cover and refrigerate.
  • Drain and discard marinade. Grill steak, covered, over medium-hot heat for 7-9 minutes on each side or until meat reaches desired doneness (for medium-rare, a thermometer should read 145°; medium, 160°; well done, 170°). Thinly slice steak across the grain; serve with sauce.
Nutrition Facts
1/4 ounce-weight: 225 calories, 10g fat (5g saturated fat), 51mg cholesterol, 353mg sodium, 5g carbohydrate (0 sugars, 0 fiber), 26g protein. Diabetic Exchanges: 4 lean meat.

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Average Rating:
  • Mamacheese2004
    Jul 8, 2016

    Excellent main dish. Of course as always I press the garlic, not mince it for a marinade because I want the flavor. Very simple marinade, with a very simple and delicious sauce. Family loved it, even the kids. Tender, juicy and full of flavor. Served it with corn and a Caesar salad.

  • lurky27
    Nov 4, 2012

    This is oh so good. We've grilled it multiple times. If you are out of green onions, don't worry...the sauce is fine without them.~ Theresa

  • ConnieK
    Jul 5, 2012

    This is sooo good. You can grill or broil the steak and it tastes equally delicious.

  • bjsilve0
    Oct 28, 2011

    Excellent. I only had horseradish sauce on hand; so I used 3 teaspoons.

  • nblibrary
    Jan 13, 2011

    No comment left

  • imatmomsplace55
    Jan 12, 2011

    As a weight watchers member, I rely on the Light & Tasty as well as Healthy Cooking and to date all of the 4-5 star recipes have always been a 'hit' with my family. This flank steak recipe in particular - I look forward to enjoying it medium rare at least twice a month.

  • imatmomsplace55
    Feb 2, 2010

    have made this recipe over and over - before this recipe flank steak was always tough - a very good recipe addition on my WW plan. The horseradish sauce is the 'icing on the cake' as you would say. A "keeper" says my husband.

  • Bridget
    Jun 28, 2007

    No comment left