One-Pan Mongolian Beef Noodles
One-Pan Mongolian Beef Noodles
Ingredients
For the Noodles and Beef
- 12 ounces lo mein noodles, or spaghetti or fettuccine
- 1 pound flank steak, thinly sliced
- 1 tablespoon olive oil
- 1 onion, small, sliced
- 3 cups fresh spinach
- 2 tablespoons green onions, chopped, for garnish (optional)
For the Mongolian Sauce
- 1/2 cup soy sauce
- 1/4 cup brown sugar
- 1 cup beef broth
- 1 teaspoon ginger, fresh or ground
- 1/2 teaspoon black pepper
- 1 tablespoon cornstarch
- 2 tablespoons water
Instructions
- 1
Bring a large pot of salted water to a rolling boil. Add the lo mein noodles (or spaghetti or fettuccine) and cook according to package directions, typically 8–10 minutes, until tender. Drain the noodles well and set them aside.
⏱️ 10 min
- 2
Heat the olive oil in a large 12-inch skillet or wok over medium-high heat.
⏱️ 1 min
- 3
Add the thinly sliced flank steak to the hot skillet. Cook for 3–4 minutes, stirring occasionally, until the beef is browned on all sides. Remove the cooked beef from the skillet and set it aside on a plate.
⏱️ 4 min
- 4
In the same skillet, add the sliced onion. Cook for 2–3 minutes, stirring frequently, until the onion softens and becomes translucent.
⏱️ 3 min
- 5
Stir in the soy sauce, brown sugar, beef broth, ginger, and black pepper into the skillet with the onions. Bring the mixture to a gentle simmer.
⏱️ 2 min
- 6
In a small bowl, whisk together the cornstarch and water until smooth. Pour this cornstarch slurry into the simmering sauce in the skillet. Cook for 1–2 minutes, stirring constantly, until the sauce thickens slightly.
⏱️ 2 min
- 7
Add the cooked noodles, fresh spinach, and the browned beef back into the skillet with the sauce. Toss everything together gently until the noodles and beef are thoroughly coated in the sauce and the spinach begins to wilt.
⏱️ 2 min
- 8
Continue to cook for 2–3 minutes, or until the spinach has fully wilted and all ingredients are heated through. Serve warm, garnished with chopped green onions if desired.
⏱️ 3 min
Kitchen Tools
Nutrition Facts (per serving)
One-Pan Mongolian Beef Noodles
For the Noodles and Beef
- 12 ounces lo mein noodles, or spaghetti or fettuccine
- 1 pound flank steak, thinly sliced
- 1 tablespoon olive oil
- 1 onion, small, sliced
- 3 cups fresh spinach
- 2 tablespoons green onions, chopped, for garnish (optional)
For the Mongolian Sauce
- 1/2 cup soy sauce
- 1/4 cup brown sugar
- 1 cup beef broth
- 1 teaspoon ginger, fresh or ground
- 1/2 teaspoon black pepper
- 1 tablespoon cornstarch
- 2 tablespoons water
Instructions
- 1
Bring a large pot of salted water to a rolling boil. Add the lo mein noodles (or spaghetti or fettuccine) and cook according to package directions, typically 8–10 minutes, until tender. Drain the noodles well and set them aside.
⏱️ 10 min - 2
Heat the olive oil in a large 12-inch skillet or wok over medium-high heat.
⏱️ 1 min - 3
Add the thinly sliced flank steak to the hot skillet. Cook for 3–4 minutes, stirring occasionally, until the beef is browned on all sides. Remove the cooked beef from the skillet and set it aside on a plate.
⏱️ 4 min - 4
In the same skillet, add the sliced onion. Cook for 2–3 minutes, stirring frequently, until the onion softens and becomes translucent.
⏱️ 3 min - 5
Stir in the soy sauce, brown sugar, beef broth, ginger, and black pepper into the skillet with the onions. Bring the mixture to a gentle simmer.
⏱️ 2 min - 6
In a small bowl, whisk together the cornstarch and water until smooth. Pour this cornstarch slurry into the simmering sauce in the skillet. Cook for 1–2 minutes, stirring constantly, until the sauce thickens slightly.
⏱️ 2 min - 7
Add the cooked noodles, fresh spinach, and the browned beef back into the skillet with the sauce. Toss everything together gently until the noodles and beef are thoroughly coated in the sauce and the spinach begins to wilt.
⏱️ 2 min - 8
Continue to cook for 2–3 minutes, or until the spinach has fully wilted and all ingredients are heated through. Serve warm, garnished with chopped green onions if desired.
⏱️ 3 min