Thick lo mein noodles stir fried with tender beef and fresh vegetables in a savory sauce. This easy beef lo mein is ready in 30 minutes and it's cheaper and better than takeout! A delicious one-pan meal that's both family-friendly and great for busy weeknights.
Thinly slice flank steak against the grain on a slight angle into ¼-inch pieces. (For easier slicing, freeze the beef for 45-60 minutes until firm.) Transfer to a bowl and toss with marinade ingredients as listed above. Let sit for 15-20 minutes.
In a small bowl, mix together the sauce ingredients and set aside.
Bring a large pot or wok of water to a boil. Add the noodles and blanch just until loosened, about 30 seconds. Drain, rinse under cold water, and shake off excess moisture. Set aside.
Heat vegetable oil in a large pan over medium heat. Sear the beef until just cooked through with lightly browned edges. Remove and set aside.
Add carrots, red bell pepper, cabbage, and the water. Stir-fry until slightly softened, about 1 minute.
Add the noodles and sauce. Stir-fry until the liquid is absorbed. Return the beef to the pan along with green onions and toss to combine. Remove from heat and serve immediately.
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