This easy Mongolian Ground Beef is a quick, 30-minute dinner made with lean beef, garlic, ginger, and a sweet-savory sauce. Serve it over rice or noodles for a flavorful weeknight meal the whole family will love.
Prepare the Sauce: Whisk together the brown sugar, water, soy sauce, oyster sauce, cornstarch, ginger, garlic, rice vinegar, and crushed red pepper flakes (if using) in a medium bowl until smooth and well combined. Set aside.
Brown the Beef: Heat a large skillet over medium-high heat. Add the ground beef and cook, breaking it apart with a wooden spoon, until fully browned and slightly crispy in spots, about 8–10 minutes. Drain excess fat if necessary.
Combine & Simmer: Add the chopped scallions to the browned beef in the skillet, then immediately pour in the prepared sauce. Stir well to coat the meat evenly.
Reduce the heat to medium and let the mixture simmer for 2–3 minutes, or until the sauce thickens and clings to the beef.
Adjust seasoning with salt and pepper if needed. Remove from the heat add add the toasted sesame oil (optional). Serve hot over steamed rice or noodles. Garnish with extra scallions or sesame seeds if desired.
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Notes
Store leftovers in an airtight container in the fridge for up to 3 days. Reheat gently in a skillet over medium heat or in the microwave until heated through.