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Crockpot Mongolian Beef

This Crockpot Mongolian Beef is a tender, flavorful slow-cooked dish featuring juicy beef strips simmered in a rich, savory-sweet sauce, perfect for an easy weeknight dinner.

Ingredients

Scale
  • 2 pounds beef flank steak, thinly sliced
  • 1/2 cup low sodium soy sauce
  • 1/2 cup water
  • 1/2 cup brown sugar
  • 3 cloves garlic, minced
  • 1 tablespoon fresh ginger, grated
  • 1/4 teaspoon red pepper flakes (optional)
  • 3 tablespoons cornstarch
  • 1/4 cup cold water
  • 3 green onions, sliced
  • 2 tablespoons vegetable oil
  • Steamed rice, for serving

Instructions

  1. Heat vegetable oil in a large skillet over medium-high heat. Add the sliced beef and quickly sear for 1-2 minutes until browned but not cooked through. Transfer beef to the crockpot.
  2. In a bowl, whisk together soy sauce, 1/2 cup water, brown sugar, garlic, ginger, and red pepper flakes.
  3. Pour the sauce mixture over the beef in the crockpot. Cover and cook on low for 4-6 hours or on high for 2-3 hours until beef is tender.
  4. About 15 minutes before serving, mix cornstarch with cold water until smooth to create a slurry.
  5. Stir the slurry into the crockpot to thicken the sauce. Cook uncovered on high for an additional 15 minutes until sauce thickens.
  6. Garnish with sliced green onions and serve over steamed rice.

Notes

For extra flavor, add steamed broccoli or snap peas during the last hour of cooking to make it a complete meal.