Beef and Broccoli Lo Mein (Printable)

Tender beef and crisp broccoli noodles in a rich, savory sauce topped with toasted sesame seeds.

# What You'll Need:

→ Beef and Marinade

01 - 12 oz flank steak, thinly sliced against the grain
02 - 1 tbsp soy sauce
03 - 1 tsp cornstarch
04 - 1/2 tsp freshly ground black pepper

→ Vegetables

05 - 10 oz broccoli florets
06 - 1 medium carrot, julienned
07 - 2 spring onions, sliced
08 - 2 cloves garlic, minced
09 - 1 tbsp fresh ginger, minced

→ Noodles

10 - 10 oz lo mein or egg noodles

→ Sauce

11 - 3 tbsp soy sauce
12 - 2 tbsp oyster sauce
13 - 1 tbsp hoisin sauce
14 - 1 tbsp toasted sesame oil
15 - 1 tbsp rice vinegar
16 - 1 tbsp brown sugar
17 - 2 tbsp water

→ Garnish

18 - 2 tbsp sesame seeds, toasted
19 - Extra sliced spring onions

# How To Make:

01 - In a bowl, combine the sliced flank steak with 1 tbsp soy sauce, cornstarch, and black pepper. Toss well to coat and let sit for 10 minutes to tenderize.
02 - Whisk together 3 tbsp soy sauce, oyster sauce, hoisin sauce, sesame oil, rice vinegar, brown sugar, and water in a small bowl until the sugar dissolves. Set aside.
03 - Prepare lo mein noodles according to package directions. Drain thoroughly and rinse under cold water to stop cooking and prevent sticking. Set aside.
04 - Heat a large wok or skillet over medium-high heat. Add the sesame seeds and toast, stirring constantly, for 2–3 minutes until golden and fragrant. Remove from pan and set aside.
05 - Add 1 tbsp neutral oil to the wok. Add the marinated beef in a single layer and stir-fry for 2–3 minutes until browned on the outside but still pink inside. Remove beef from the pan and set aside.
06 - Add another 1 tbsp oil to the wok if needed. Add minced garlic and ginger, stir-frying for 30 seconds until fragrant. Add broccoli florets and julienned carrot, stir-frying for 3–4 minutes until crisp-tender.
07 - Return the cooked beef to the wok along with the reserved noodles. Pour the prepared sauce over the ingredients. Toss everything vigorously for 2 minutes to coat evenly and heat through.
08 - Stir in the sliced spring onions and remove from heat immediately. Serve the lo mein hot, garnished with the toasted sesame seeds and extra spring onions.

# Expert Tips:

01 -
  • It comes together in under 40 minutes, which means weeknight dinner without the guilt of ordering out again.
  • The combination of tender beef and crisp broccoli in that savory sauce creates layers of flavor that feel way more refined than the effort required.
  • It's naturally dairy-free, so it works for almost anyone at the table without feeling like a compromise.
02 -
  • Slice your beef against the grain or it will be tough and chewy no matter how perfect everything else is.
  • Toast your own sesame seeds in the wok before adding oil—store-bought toasted seeds work, but the aroma when you do it fresh is a game changer.
  • Don't overcrowd the wok when browning the beef; give it space to develop color or it will steam instead of sear.
03 -
  • Prep everything before you turn on the heat—once the wok gets going, there's no time to chop or measure.
  • Keep a small bowl of water nearby while cooking; if the sauce looks too thick or the pan too dry, a splash brings everything back into balance.