Beef Lo Mein Recipe: Homemade Stir-Fry Noodles

Hello, fellow food lovers! If you want a fast, satisfying dinner that bursts with savory, umami flavor, this Beef Lo Mein recipe is a winner. It features tender slices of beef, crisp vibrant vegetables, and springy noodles tossed in a rich, balanced sauce. The recipe is quick enough for busy weeknights yet impressive enough for guests. It’s adaptable, wholesome, and straightforward to prepare at home.

Ingredients

• For the Beef:
  • 1 lb beef sirloin, thinly sliced
  • 2 tablespoons soy sauce
  • 1 tablespoon cornstarch
  • 1 tablespoon vegetable oil
• For the Lo Mein:
  • 8 oz lo mein noodles or spaghetti
  • 2 tablespoons vegetable oil, divided
  • 1 onion, thinly sliced
  • 2 cloves garlic, minced
  • 1 cup sliced carrots
  • 1 cup sliced bell peppers (any color)
  • 1 cup broccoli florets
  • 1 cup snow peas
  • 1/4 cup soy sauce
  • 2 tablespoons oyster sauce
  • 1 teaspoon sesame oil
  • 1/4 cup beef broth
  • 1 tablespoon cornstarch mixed with 1 tablespoon water (slurry)
  • Green onions, chopped (for garnish)
  • Sesame seeds (optional, for garnish)

Instructions

1. Marinate the Beef: In a bowl, mix the thinly sliced beef with 2 tablespoons soy sauce and 1 tablespoon cornstarch until the pieces are evenly coated. Let it rest for 10–15 minutes; the cornstarch helps create a silky texture when cooked.
2. Cook the Noodles: Prepare the lo mein noodles or spaghetti according to package directions until al dente. Drain and set aside, tossing gently with a little oil to prevent sticking.
3. Stir-Fry the Beef: Heat 1 tablespoon vegetable oil in a large skillet or wok over medium-high heat. Add the marinated beef in a single layer and stir-fry until browned and just cooked through, about 4–5 minutes. Remove the beef and keep warm.
4. Cook the Vegetables: In the same skillet, add the remaining tablespoon of oil. Sauté the onion and garlic briefly, then add carrots, bell peppers, broccoli, and snow peas. Cook until vegetables are tender-crisp, about 5–7 minutes, keeping some bite for texture.
5. Combine and Finish: Return the cooked beef to the skillet with the vegetables. Whisk together 1/4 cup soy sauce, 2 tablespoons oyster sauce, 1 teaspoon sesame oil, and 1/4 cup beef broth, then pour over the beef and vegetables. Stir to combine. Add the cornstarch slurry and cook 1–2 minutes, stirring constantly, until the sauce thickens and coats the ingredients. Add the cooked noodles and toss until everything is evenly coated and heated through.
6. Garnish and Serve: Plate the lo mein and finish with chopped green onions and a sprinkle of sesame seeds if desired. Serve hot.

• Slice the Beef Thinly: Cut against the grain for maximum tenderness. Chilling the meat briefly makes thin slicing easier.
• Prep Ahead: Have all vegetables cut and sauces measured before you begin — stir-frying moves quickly.
• Sauce Preference: If you like more sauce, increase the soy and oyster sauce proportionally and add a touch more broth.