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–+ servings
overhead shot of crock pot flank steak topped with cilantro

Slow Cooker Flank Steak

Samantha Erb
Cook juicy, flavorful flank steak in the crockpot with just a handful of ingredients! Perfect for busy weeknights, all you need to do is to set it and forget until dinner.
5 from 5 votes
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Prep Time 5 minutes
Cook Time 6 hours
2 hours
Total Time 8 hours 5 minutes
Course Slow Cooker
Cuisine American
Servings 4 servings
Calories 617 kcal

Ingredients

  • 1.5-2 pounds flank steak
  • ⅓ cup balsamic vinegar
  • ¼ cup neutral cooking oil
  • 2 tablespoons honey
  • 1 tablespoon Worcestershire sauce
  • 1 tablespoon Dijon mustard
  • 1 teaspoon garlic minced
  • ½ teaspoon kosher salt
  • ½ teaspoon ground black pepper

Instructions
 

  • Mix the balsamic vinegar, oil, honey, worcestershire, dijon mustard, garlic, salt, and pepper in a small bowl
  • Place the flank steak and marinade ingredients in the slow cooker and flip the steak once or twice to coat the steak.
  • Cook undisturbed for 6 hours on low or 3-4 hours on high until very tender. 
  • When the cooking time is done, carefully transfer the steak to a cutting board, slicing it against the grain and serving as desired.

Notes

You can marinade the steak overnight by placing the marinade ingredients and steak in a Ziploc bag.

Nutrition

Serving: 1gCalories: 617kcalCarbohydrates: 14gProtein: 63gFat: 33gSaturated Fat: 9gPolyunsaturated Fat: 21gCholesterol: 179mgSodium: 433mgSugar: 12g
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