Chicken and Broccoli Lo Mein is a quick, flavor-packed weeknight dinner with tender chicken, crisp-tender vegetables, and saucy noodles that come together in one pan. It is reliable, family-friendly, and perfect when you want a fast homemade stir-fry without a complicated prep.

This is the kind of meal that works beautifully on a busy evening when you want something warm, savory, and satisfying without spending all night at the stove.
The combination of juicy chicken, broccoli, bell pepper, carrots, and soft noodles gives you a little bit of everything in each bite. The sauce brings that familiar sweet-salty balance with sesame richness and just enough heat to keep it interesting.
What makes this dish especially useful is how straightforward it is. You cook the noodles, stir-fry the chicken and vegetables, then toss everything together until glossy and hot. It feels like takeout-style comfort, but it is made right in your kitchen with simple ingredients.
What You Need to Make This Chicken and Broccoli Lo Mein
Chicken breast gives the dish lean, tender protein and cooks quickly when sliced into even strips.
Lo mein noodles create the soft, chewy base that holds onto the sauce and ties the whole stir-fry together.
Broccoli florets add freshness, color, and that classic crisp-tender bite that works so well with noodles.
Red bell pepper brings a natural sweetness that balances the soy-based sauce and adds vibrant color to the pan.
Carrot sticks add a little crunch and a mild sweetness that rounds out the vegetables.
Sesame oil is used for cooking the stir-fry and helps build that signature savory aroma.
Reduced-sodium soy sauce forms the salty backbone of the sauce without making the dish too heavy.
Oyster sauce gives the noodles a deeper savory flavor and a smoother, more rounded finish.
Brown sugar softens the saltiness and helps create that balanced sweet-savory stir-fry taste.
Toasted sesame oil adds a richer nutty note in the sauce and gives the dish more depth.
Sriracha brings a gentle heat that keeps the sauce lively without overpowering the other flavors.
Ground ginger adds subtle warmth and a mild aromatic edge that makes the sauce taste more complete.
Sesame seeds are optional, but they give the finished noodles a little texture and a simple garnish.

Step-by-Step Chicken and Broccoli Lo Mein
STEP 1: Start by cooking the noodles until just tender according to the package directions. Drain them well and set them aside so they are ready to go once the skillet is hot.
STEP 2: In a small bowl, stir together the soy sauce, oyster sauce, brown sugar, toasted sesame oil, sriracha, and ginger until the sugar is dissolved and the sauce looks smooth and evenly mixed.
STEP 3: Season the sliced chicken lightly with salt and pepper. Heat sesame oil in a large skillet, then cook the chicken until it is fully done and lightly golden in spots. Remove it to a plate so it stays juicy while the vegetables cook.
STEP 4: Add the broccoli, carrots, and bell pepper to the same skillet. Cook them until they are tender but still have a little bite. This keeps the stir-fry from turning soft and gives the finished dish better texture.
STEP 5: Return the chicken to the pan, then add the drained noodles. Pour the sauce over everything and toss well so the noodles, vegetables, and chicken all get coated.
STEP 6: Let everything cook together for another couple of minutes, stirring often, until the sauce clings to the noodles and the whole skillet is hot and glossy. Finish with sesame seeds and serve right away.
Serving Ideas for Chicken and Broccoli Lo Mein
A simple cucumber salad is a great match here because it adds a cool, crisp contrast to the warm noodles and savory sauce.
Steamed edamame works well when you want something easy on the side that still fits the same takeout-inspired feel.
If you are serving a bigger dinner, a light bowl of broth-based soup makes this meal feel extra complete without making it too heavy.
Can I make this ahead of time?
Yes, you can prep several parts ahead to make dinner faster. Slice the chicken, cut the vegetables, and mix the sauce earlier in the day. When you are ready to cook, the stir-fry comes together very quickly.
What noodles work if I do not have lo mein?
Lo mein noodles are ideal, but other long noodles can still work. Use a similar noodle with a soft, chewy texture and avoid overcooking it. Slightly underdone noodles are best because they finish cooking when tossed in the sauce.

How do I keep the vegetables crisp-tender?
The key is not to crowd the pan or cook them too long. Use medium-high heat, stir occasionally instead of constantly, and stop when the broccoli is bright and the peppers and carrots have softened just enough.
Can I make it milder or spicier?
Absolutely. For a milder version, reduce or skip the sriracha. For more heat, add an extra small squeeze at the end after tasting. That way you can adjust the spice without changing the rest of the sauce.
Helpful Tips
- Cook the noodles just until tender, then drain them well so they do not turn mushy once added back to the skillet.
- Keep the chicken strips close in size so they cook evenly and stay tender instead of drying out.
- Toss the noodles with the sauce only at the end to help them stay glossy and keep the vegetables from overcooking.
Keeping Leftovers Fresh
Store leftover lo mein in an airtight container in the refrigerator for up to 3 days. The flavors stay very good, and it makes a convenient lunch the next day.
For freezing, place cooled portions in freezer-safe containers for up to 1 month. The dish will still be usable, but the vegetables may soften more and the noodles will lose some of their original texture after thawing.
To reheat from the fridge, warm it in a skillet over medium heat with a small splash of water so the sauce loosens and coats the noodles again. You can also microwave it in short intervals, stirring between each one, until heated through.

Chicken and Broccoli Lo Mein
Ingredients
For the stir-fry:
- 1 pound chicken breast sliced into 1-inch strips
- 8 ounces lo mein noodles
- 1 large red bell pepper thinly sliced
- 2 1/2 cups broccoli florets
- 1 cup carrot sticks
- 2 tablespoons sesame oil
For the sauce:
- 1/3 cup reduced-sodium soy sauce
- 2 tablespoons oyster sauce
- 2 tablespoons brown sugar
- 1 tablespoon toasted sesame oil for deeper flavor
- 1 teaspoon sriracha sauce
- 1/4 teaspoon ground ginger
For optional garnish:
- sesame seeds
Instructions
- Cook the lo mein noodles according to the package instructions. Once they are tender, drain well and set aside.
- In a small bowl, whisk together the soy sauce, oyster sauce, brown sugar, toasted sesame oil, sriracha, and ground ginger until the mixture is smooth and fully blended. Set the sauce aside.
- Season the chicken strips with salt and pepper to taste. Heat 2 tablespoons of sesame oil in a large skillet over medium-high heat. Add the chicken and cook for 6 to 7 minutes, stirring occasionally, until fully cooked and no longer pink at the center. Transfer the chicken to a plate and reserve.
- Using the same skillet, add the broccoli, carrot sticks, and red bell pepper. Sauté for 5 to 6 minutes, stirring from time to time, until the vegetables are tender and lightly caramelized.
- Return the cooked chicken to the skillet. Add the drained noodles and pour in the prepared sauce. Toss thoroughly so the noodles, chicken, and vegetables are evenly coated. Cook for about 2 minutes, stirring frequently, until everything is heated through.
- Transfer to serving plates and finish with sesame seeds, if desired. Serve immediately.