Mongolian Ground Beef Noodles

Mongolian Ground Beef Noodles Bold, savory, and deeply satisfying — tender noodles and seasoned ground beef tossed in a rich, garlicky, ginger-scented Mongolian sauce with a perfect balance of sweet, salty, and umami. A quick, incredible weeknight dinner that tastes better than takeout and comes together in under 30 minutes.

INGREDIENTS

• 1.5 pounds ground beef (80/20)
• 12 ounces lo mein noodles, spaghetti, or linguine
• 1 medium yellow onion, thinly sliced
• 6 garlic cloves, minced
• 1 tablespoon fresh ginger, finely grated
• 2 tablespoons vegetable oil
• 0.5 cups soy sauce
• 0.25 cups brown sugar, packed
• 0.25 cups beef broth
• 2 tablespoons oyster sauce
• 1 tablespoon hoisin sauce
• 1 tablespoon sesame oil
• 1 tablespoon cornstarch
• 2 tablespoons water (for cornstarch slurry)
• 1 teaspoon red pepper flakes (optional)
• 0.5 teaspoons black pepper
• 4 green onions, thinly sliced, for garnish
• 1 tablespoon sesame seeds, for garnish
• extra red pepper flakes, for serving (optional)

STEPS

1. Cook the noodles: Bring a large pot of salted water to a boil. Cook the noodles according to package directions until just al dente. Drain, toss with a tiny drizzle of sesame oil to prevent sticking, and set aside.
2. Make the sauce: In a bowl, whisk together the soy sauce, brown sugar, beef broth, oyster sauce, hoisin sauce, sesame oil, red pepper flakes if using, and black pepper until smooth and well combined. In a separate small bowl, stir the cornstarch and water together until dissolved to make the slurry. Set both aside.
3. Brown the beef: Heat the vegetable oil in a large skillet or wok over medium-high heat. Add the ground beef and cook, breaking it into small crumbles, for 6–8 minutes until deeply browned and cooked through. Drain off excess fat leaving about 1 tablespoon in the pan.
4. Cook the aromatics: Reduce heat to medium. Add the sliced onion and cook for 3–4 minutes until softened. Add the minced garlic and grated ginger and cook for 1–2 minutes, stirring constantly, until deeply fragrant. Do not let the garlic burn — it will turn bitter and overpower the entire dish.
5. Build the sauce: Pour the prepared sauce into the skillet with the beef and onion mixture and stir well to combine. Bring to a simmer and cook for 2–3 minutes until the sauce is fragrant and slightly reduced. Stir in the cornstarch slurry and cook for another 1–2 minutes, stirring constantly, until the sauce thickens to a glossy, coating consistency that clings to everything beautifully.
6. Toss the noodles: Add the cooked noodles directly to the skillet and toss everything together with tongs until every strand of noodle is thoroughly coated in the rich, glossy Mongolian sauce and the beef is evenly distributed throughout. Cook for 1–2 minutes more, tossing constantly, until everything is heated through and perfectly combined.
7. Serve: Divide into bowls and top generously with sliced green onions and sesame seeds. Serve immediately with extra red pepper flakes on the side for those who like extra heat.

NOTES Tips: Lo mein noodles give the most authentic texture and are worth seeking out — spaghetti or linguine are excellent substitutes that work beautifully. Tossing the cooked noodles with a little sesame oil immediately after draining prevents them from clumping together while you finish the beef and sauce. The cornstarch slurry is what transforms the sauce from thin and watery into a glossy, clingy, restaurant-quality coating — always add it at the end and stir constantly for the smoothest result. Brown sugar gives the sauce its signature Mongolian sweetness and caramel depth — do not reduce the amount or the sauce will taste flat and one-dimensional. This dish comes together so quickly that having all the sauce ingredients measured and ready before you start cooking is strongly recommended. Leftovers keep refrigerated for up to 3 days and reheat well in a skillet over medium heat with a splash of beef broth to loosen the sauce.