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In a medium bowl, combine the sliced flank steak with 2 tablespoons soy sauce, 1 tablespoon cornstarch, 1 teaspoon sesame oil, and 1/2 teaspoon black pepper. Mix well to coat the beef. Let marinate at room temperature for at least 15 minutes while you prepare the other ingredients.

In a small bowl, whisk together all the lo mein sauce ingredients: 1/4 cup soy sauce, 2 tablespoons oyster sauce, 1 tablespoon rice vinegar, 1 tablespoon brown sugar, 1 teaspoon sesame oil, 1 teaspoon cornstarch, and 2 tablespoons water. Set aside.

Cook the lo mein noodles according to package directions until al dente. Drain well and rinse with cold water to prevent sticking. Toss with a tiny bit of vegetable oil if desired.

Heat 1 tablespoon of vegetable oil in a large skillet or wok over high heat. Add the marinated beef in a single layer and cook for 2-3 minutes per side until browned and cooked through. Remove the beef from the skillet and set aside.

Add the remaining 1 tablespoon of vegetable oil to the same skillet. Add the minced garlic, grated ginger, and sliced yellow onion. Sauté for 1-2 minutes until fragrant.

Add the broccoli florets and julienned carrots to the skillet. Stir-fry for 3-5 minutes until the vegetables are tender-crisp.

Return the cooked beef to the skillet with the vegetables. Add the cooked lo mein noodles. Pour the prepared lo mein sauce over everything.

Toss everything together until the noodles and vegetables are evenly coated with the sauce and heated through. Cook for another 2-3 minutes.

Serve immediately, garnished with sliced green onions.


In a medium bowl, combine the sliced flank steak with 2 tablespoons soy sauce, 1 tablespoon cornstarch, 1 teaspoon sesame oil, and 1/2 teaspoon black pepper. Mix well to coat the beef. Let marinate at room temperature for at least 15 minutes while you prepare the other ingredients.

In a small bowl, whisk together all the lo mein sauce ingredients: 1/4 cup soy sauce, 2 tablespoons oyster sauce, 1 tablespoon rice vinegar, 1 tablespoon brown sugar, 1 teaspoon sesame oil, 1 teaspoon cornstarch, and 2 tablespoons water. Set aside.

Cook the lo mein noodles according to package directions until al dente. Drain well and rinse with cold water to prevent sticking. Toss with a tiny bit of vegetable oil if desired.

Heat 1 tablespoon of vegetable oil in a large skillet or wok over high heat. Add the marinated beef in a single layer and cook for 2-3 minutes per side until browned and cooked through. Remove the beef from the skillet and set aside.

Add the remaining 1 tablespoon of vegetable oil to the same skillet. Add the minced garlic, grated ginger, and sliced yellow onion. Sauté for 1-2 minutes until fragrant.

Add the broccoli florets and julienned carrots to the skillet. Stir-fry for 3-5 minutes until the vegetables are tender-crisp.

Return the cooked beef to the skillet with the vegetables. Add the cooked lo mein noodles. Pour the prepared lo mein sauce over everything.

Toss everything together until the noodles and vegetables are evenly coated with the sauce and heated through. Cook for another 2-3 minutes.

Serve immediately, garnished with sliced green onions.
