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Slow Cooker Mongolian Beef Recipe

4.2 from 55 reviews

This Slow Cooker Mongolian Beef recipe delivers tender, flavorful strips of flank steak simmered in a sweet and savory sauce made with soy sauce, brown sugar, garlic, and ginger. Perfect for a hands-off, comforting meal, it’s garnished with fresh green onions for a bright finish and served best with steamed rice or noodles.

Ingredients

Scale

Beef and Coating

  • 1 1/2 pounds flank steak, thinly sliced against the grain
  • 1/4 cup cornstarch

Sauce and Seasoning

  • 1 tablespoon toasted sesame oil
  • 1 teaspoon minced garlic
  • 1 teaspoon minced ginger
  • 1/2 cup low sodium soy sauce
  • 1/3 cup brown sugar
  • 1/2 cup water

Garnish

  • 1/2 cup green onions, sliced

Instructions

  1. Coat the Beef: In a mixing bowl, toss the thinly sliced flank steak with cornstarch until each piece is evenly coated. This helps thicken the sauce during cooking and adds a slight silky texture to the beef.
  2. Combine in Slow Cooker: Transfer the coated steak to the slow cooker. Add toasted sesame oil, minced garlic, minced ginger, low sodium soy sauce, brown sugar, and water. Stir gently to combine all the ingredients, ensuring the beef is well coated with the sauce mixture.
  3. Slow Cook: Cover the slow cooker and cook on HIGH for 2-3 hours or on LOW for 4-5 hours. The beef should become tender and absorb the rich flavors of the sauce during this time.
  4. Add Green Onions: Just before serving, stir in the sliced green onions to add a fresh, vibrant flavor and color to the dish.
  5. Serve: Serve the Mongolian beef hot, ideally over steamed rice or noodles to soak up the delicious sauce.

Notes

  • Slice the flank steak thinly against the grain for the most tender results.
  • Low sodium soy sauce reduces the saltiness but retains the umami flavor.
  • The cornstarch coating thickens the sauce and helps it cling to the beef.
  • Adjust brown sugar quantity if you prefer it less sweet or sweeter.
  • Leftovers can be stored in an airtight container in the refrigerator for up to 3 days.

Keywords: Slow Cooker Mongolian Beef, Mongolian Beef Recipe, Slow Cooker Recipes, Easy Beef Recipes, Asian Slow Cooker Dinner