Flank Steak in Mushroom Sauce

Flank Steak in Mushroom Sauce

Your guests will think you're a gourmet chef when they taste this slow cooked flank steak in mushroom sauce. And they won't have to know that your slow cooker did all of the work!

Cooking Time9 hr

Cooking MethodSlow Cooker


  • 1 to 1.5 pounds flank steak
  • 1/4 cup Sauternes wine
  • 1 tablespoon soy sauce
  • 1 clove garlic; minced
  • 10 1/2 ounces can beef broth
  • 1 tablespoon catsup
  • 1 teaspoon prepared mustard
  • 1 tablespoon instant minced onion
  • 2 tablespoons cornstarch
  • 2 tablespoons water
  • 1/4 pound fresh mushrooms; sliced


  1. Place steak in slow-cooking pot. Combine sauterne, soy sauce, garlic, broth, catsup, mustard, and onion; pour over steak.
  2. Cover and cook on low for 6 to 8 hours. Dissolve cornstarch in water; stir into pot. Add mushrooms. Turn control to high; cover and cook on high 20 to 30 minutes or until mushrooms are done.

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This looks deliuos, I love mushrooms,so I can't wait to try it. Thank you so much. Rose


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