This Broccoli Beef Lo Mein is one of those dishes I turn to when I want something satisfying, flavorful, and quick.
It’s perfect for a weeknight dinner, and the leftovers are just as good the next day.

I love how easily this comes together, and the combination of tender beef, crisp broccoli, and those chewy noodles in a savory sauce… it’s just fantastic!

It’s a takeout favorite you can recreate at home.

Recipe Overview: Broccoli Beef Lo Mein

This dish is all about the perfect balance of textures and flavors.
You’ve got tender slices of beef, vibrant green broccoli florets, and perfectly cooked noodles, all coated in a delicious, savory sauce.

It’s a complete meal in one bowl, packed with protein, vegetables, and carbohydrates.

This is a great option for a busy weeknight when you’re craving something hearty and delicious but don’t have a ton of time.

It is also perfect for meal prep – you can make a big batch on Sunday and enjoy it throughout the week.

Serve it hot, straight from the wok or skillet! You can add a sprinkle of sesame seeds or chopped green onions for garnish, if you like.

Detailed Ingredients for Our Lo Mein

Here’s what you’ll need to make this amazing dish:

Beef: 1 pound of flank steak, thinly sliced against the grain. Sirloin steak also works well. Thinly slicing it is key for quick cooking and tenderness.
Broccoli: 1 large head of broccoli, cut into bite-sized florets. You want about 3 cups of florets. Fresh broccoli is best for that perfect crisp-tender texture.
Lo Mein Noodles: 8 ounces of dried lo mein noodles. If you can’t find lo mein, you can substitute with spaghetti or linguine.
Soy Sauce: 1/2 cup of low-sodium soy sauce. This forms the base of our sauce, providing that essential umami flavor.
Beef Broth: 1/4 cup of low-sodium beef broth. This adds depth and richness to the sauce.
Brown Sugar: 2 tablespoons of light brown sugar. This adds a touch of sweetness to balance the savory flavors.
Cornstarch: 1 tablespoon. This is our thickening agent, creating that glossy, restaurant-style sauce.
Ginger: 1 tablespoon of freshly grated ginger. It brings a warm, aromatic element to the dish.
Garlic: 2 cloves of garlic, minced. Garlic adds that essential pungent flavor that we all love.
Sesame Oil: 1 teaspoon. A little goes a long way! This adds a nutty aroma and flavor.
Vegetable Oil: 2 tablespoons, for stir-frying. You can also use canola oil or any other high-heat oil.
Optional Garnish: Sesame seeds and chopped green onions.

Step-by-Step Instructions: Making the Perfect Broccoli Beef Lo Mein

Let’s get cooking! Follow these steps for the best results:

Prepare the Noodles: Cook the lo mein noodles according to the package directions. Drain them well and rinse them under cold water to prevent sticking. Set aside.
Make the Sauce: In a small bowl, whisk together the soy sauce, beef broth, brown sugar, cornstarch, grated ginger, minced garlic, and sesame oil. Whisk until the cornstarch is fully dissolved and the sauce is smooth. This ensures your sauce will thicken evenly.
Cook the Beef: Heat 1 tablespoon of vegetable oil in a large skillet or wok over high heat. Add the sliced beef and cook for 2-3 minutes, until browned but still slightly pink inside. Don’t overcrowd the pan – you may need to work in batches. Remove the beef from the skillet and set aside.
Stir-Fry the Broccoli: Add the remaining tablespoon of vegetable oil to the skillet. Add the broccoli florets and stir-fry for 3-4 minutes, until they are bright green and slightly tender-crisp. You want them to still have a little bit of bite.
Combine Everything: Return the beef to the skillet with the broccoli. Pour the sauce over the beef and broccoli. Bring the sauce to a simmer, stirring constantly, until it thickens and becomes glossy. This should only take a minute or two.
Add the Noodles: Add the cooked lo mein noodles to the skillet. Toss everything together until the noodles are well coated with the sauce and heated through. Make sure every strand is coated in that deliciousness!
Serve: Serve immediately. Garnish with sesame seeds and chopped green onions, if desired.

Variations & Tips for This Beef Lo Mein Recipe

Spice it Up: Add a pinch of red pepper flakes or a drizzle of sriracha to the sauce for a little heat.
Add More Veggies: Feel free to add other vegetables, such as sliced bell peppers, carrots, mushrooms, or snap peas.
Make it Ahead: You can prepare the sauce and slice the beef and broccoli ahead of time. Store them separately in the refrigerator until you’re ready to cook.
Storage: Leftovers can be stored in an airtight container in the refrigerator for up to 3 days.
Reheating: Reheat leftovers in a skillet over medium heat, or in the microwave. You may need to add a splash of water or broth if the noodles have absorbed too much sauce.
For a richer flavor, add a tablespoon of oyster sauce (check for fish allergies if relevant).

Key Details

Prep time: 20 minutes
Cook time: 15 minutes
Total time: 35 minutes
Servings: 4-6
Equipment you’ll need: Large skillet or wok, small bowl, whisk

Broccoli Beef Lo Mein

Satisfying and flavorful Broccoli Beef Lo Mein, perfect for a quick weeknight dinner. Tender beef, crisp broccoli, and chewy noodles in a savory sauce.

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Prep Time 20

Cook Time 15

Total Time 35

Course Main Dish

Cuisine Asian

Servings 4 servings

Calories 600 kcal

Ingredients

1 pound flank steak thinly sliced against the grain
1 large head broccoli cut into bite-sized florets (about 3 cups)
8 ounces dried lo mein noodles
1/2 cup low-sodium soy sauce
1/4 cup low-sodium beef broth
2 tablespoons light brown sugar
1 tablespoon cornstarch
1 tablespoon freshly grated ginger
2 cloves garlic minced
1 teaspoon sesame oil
2 tablespoons vegetable oil
Sesame seeds and chopped green onions for garnish optional

Instructions

Cook lo mein noodles according to package directions. Drain and rinse under cold water. Set aside.
In a small bowl, whisk together soy sauce, beef broth, brown sugar, cornstarch, ginger, garlic, and sesame oil until smooth.
Heat 1 tablespoon vegetable oil in a large skillet or wok over high heat. Add beef and cook for 2-3 minutes until browned but slightly pink. Remove and set aside.
Add remaining tablespoon vegetable oil to the skillet. Add broccoli and stir-fry for 3-4 minutes until bright green and tender-crisp.
Return beef to skillet with broccoli. Pour sauce over beef and broccoli. Bring to a simmer, stirring constantly, until thickened and glossy (1-2 minutes).
Add cooked lo mein noodles to skillet. Toss until noodles are coated with sauce and heated through.
Serve immediately, garnished with sesame seeds and green onions if desired.