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Slow Cooker Mongolian Beef Recipe

4.8 from 129 reviews

Slow Cooker Mongolian Beef is a deliciously tender and flavorful dish featuring thinly sliced flank steak cooked low and slow in a rich, savory sauce made with soy sauce, brown sugar, garlic, and carrots. Perfect for an easy weeknight meal, this recipe combines sweet and savory elements with a hint of garlic, topped with fresh green onions and sesame seeds for garnish.

Ingredients

Scale

Main Ingredients

  • 1 ½ pounds flank steak
  • ¼ cup cornstarch
  • 2 tablespoons olive oil
  • 1 teaspoon garlic, minced
  • ¾ cup soy sauce
  • ¾ cup water
  • ¾ cup brown sugar
  • 1 cup carrots, grated

Garnishes

  • Green onions, chopped
  • Sesame seeds

Instructions

  1. Prepare the Steak: Cut 1 ½ pounds of flank steak into thin strips. Place the strips in a ziplock bag, add ¼ cup cornstarch, and shake well to evenly coat the steak pieces with the cornstarch.
  2. Make the Sauce: In a medium-sized bowl, whisk together 2 tablespoons olive oil, 1 teaspoon minced garlic, ¾ cup soy sauce, ¾ cup water, and ¾ cup brown sugar until well combined.
  3. Add Ingredients to Slow Cooker: Pour the sauce mixture into the slow cooker. Add 1 cup grated carrots followed by the cornstarch-coated flank steak strips. Stir well to ensure all the ingredients are coated with the sauce.
  4. Cook the Beef: Cover the slow cooker. Cook on high for 2 to 3 hours or on low for 4 to 5 hours until the beef is tender and fully cooked through.
  5. Serve and Garnish: Serve the Mongolian beef over cooked rice. Garnish with chopped green onions and a sprinkle of sesame seeds for added flavor and presentation.

Notes

  • For best results, slice the flank steak very thinly against the grain to ensure tenderness.
  • Adjust brown sugar amount for desired sweetness.
  • If the sauce is too thin after cooking, you can thicken it by mixing a tablespoon of cornstarch with a bit of cold water and stirring it in, then cooking on high for 15 more minutes.
  • Serve with steamed white rice or your favorite grain.
  • Leftovers keep well in the refrigerator for up to 3 days.

Keywords: Mongolian Beef, Slow Cooker Beef Recipe, Easy Asian Beef, Slow Cooker Dinner, Flank Steak Slow Cook