Vegetable Lo Mein

This vegetable lo mein brings glossy noodles, crisp-tender mixed vegetables, and a savory soy-sesame sauce together in one skillet in about 25 minutes. Soft lo mein noodles soak up a simple sauce of soy, oyster sauce, sesame oil, and a touch of sugar, while broccoli, carrots, bok choy, and peppers stay bright and fresh. It is an easy weeknight stir-fry that feels like takeout without the wait.

Why You’ll Like This Vegetable Lo Mein

Homemade vegetable lo mein comes together faster than a delivery run. The sauce is pantry-friendly, the vegetables are flexible, and the whole dish cooks in the time it takes to boil the noodles.

• Fast weeknight dinner: ready in about 25 minutes with one skillet and a pot for noodles.
• Customizable vegetables: use broccoli, carrots, bok choy, peppers, green beans, or whatever is in the fridge.
• Takeout flavor at home: soy, oyster sauce, and sesame oil give that classic glossy noodle taste.

Ingredients for Vegetable Lo Mein

For the Sauce

• 3 tbsp soy sauce
• 2 tbsp oyster sauce (or vegetarian oyster sauce / extra soy sauce)
• 1 tsp sesame oil
• 1 tbsp sugar
• 1 cup water
• 1/2 tsp black pepper

For the Noodles and Vegetables

• 8 oz lo mein noodles, cooked per package directions
• 2 tbsp oil
• 1 onion, sliced
• 3 garlic cloves, minced
• 3 cups mixed vegetables (broccoli, carrots, bok choy, bell peppers, or green beans)

You will need a large skillet or wok, a pot for boiling noodles, a colander, and a small bowl for the sauce. Serves about 4.

Ingredient Notes

The noodles: Fresh or dried lo mein noodles both work. Cook until tender per the package, then drain well. Spaghetti or linguine work in a pinch.

The sauce: Soy sauce brings salt, oyster sauce adds savory richness, sesame oil gives a nutty finish, and sugar balances the salt. Water thins the mixture so it coats evenly. For a vegetarian plate, swap oyster sauce for vegetarian oyster sauce, or use a little extra soy sauce.

The vegetables: Aim for about 3 cups of mixed cut vegetables. Broccoli, carrots, bok choy, bell peppers, and green beans all hold up in a quick toss. Cut everything bite-size so they cook at a similar pace.

The aromatics: Sliced onion and minced garlic build the base. Cook until the onion is translucent and the garlic is fragrant, but do not let the garlic brown.

How to Make Vegetable Lo Mein

Step by Step

1. Cook the noodles. Bring a pot of water to a boil and cook the lo mein noodles according to the package directions. Drain well and set aside. Do not rinse unless the package says to; a little surface starch helps the sauce cling.
2. Whisk the sauce. In a small bowl, whisk together the soy sauce, oyster sauce, sesame oil, sugar, water, and black pepper until the sugar dissolves.
3. Sauté the aromatics. Heat the oil in a large skillet or wok over medium-high heat. Add the sliced onion and minced garlic. Cook, stirring often, until the onion is translucent and the garlic is fragrant, about 2 to 3 minutes.
4. Add the noodles and sauce. Add the drained noodles. Pour the sauce over the top and toss until the noodles are evenly coated and glossy.
5. Add the vegetables. Add the mixed vegetables and toss for 2 to 3 minutes, until the sauce coats everything and the vegetables are crisp-tender.
6. Serve. Taste and adjust with a splash more soy sauce if needed. Divide among bowls and serve hot.

Tips for the Best Vegetable Lo Mein

Cook Noodles Just to Tender

Overcooked noodles turn mushy once they hit the hot sauce. Pull them when they still have a little bite, since they soften a bit more in the skillet.

Whisk the Sauce Ahead

Stir-frying moves fast. Having the sauce mixed and ready means you can pour and toss without scrambling for bottles while the garlic browns.

Keep Vegetables Crisp-Tender

Add firmer vegetables like broccoli stems and carrots first, then softer ones like bok choy leaves and peppers. You can also use pre-blanched broccoli so everything finishes together in those last 2 to 3 minutes.

Work Over Medium-High Heat

High enough heat keeps the vegetables from steaming and turning soggy. A large skillet or wok gives the noodles room to toss without crowding.

Drain Noodles Well

Extra water dilutes the sauce. Shake the colander a few times, and if the noodles stick while waiting, toss them with a tiny drop of oil.

Variations

• Tofu: pan-sear cubed firm tofu until golden, then fold it in with the vegetables.
• Chicken: add thinly sliced cooked chicken when you toss in the vegetables.
• Shrimp: cook peeled shrimp after the onion and garlic, then proceed with noodles and sauce.
• Spicy: stir 1 teaspoon chili garlic sauce or a pinch of red pepper flakes into the sauce.
• Extra greens: wilt a handful of spinach or shredded cabbage in the last minute of cooking.
• Mushroom boost: sauté sliced mushrooms with the onion for deeper savory flavor.

Storage

Refrigerator: Store cooled vegetable lo mein in an airtight container for up to 3 days. The noodles absorb more sauce as they sit.

Reheating: Reheat in a skillet over medium heat with a splash of water or soy sauce to loosen the noodles. The microwave works in 1-minute bursts, stirring between rounds.

Freezer: Freezing works but the vegetables soften after thawing. Cool completely, pack for up to 1 month, and thaw overnight before reheating.

Make-ahead: Whisk the sauce and chop the vegetables up to a day ahead. Cook the noodles just before stir-frying.

Frequently Asked Questions

Can I make vegetable lo mein without oyster sauce?

Yes. Use vegetarian oyster sauce, or replace it with an extra tablespoon of soy sauce plus a pinch more sugar.

What noodles work if I cannot find lo mein?

Spaghetti, linguine, or fresh egg noodles all work. Cook them al dente and drain well before tossing with the sauce.

How do I keep the vegetables from getting soggy?

Cut them evenly, keep the heat at medium-high, and cook only 2 to 3 minutes after adding them. Firmer pieces can go in first, or blanch broccoli briefly so it needs less time in the skillet.

Is this vegetable lo mein vegetarian?

The base is vegetable-forward. Standard oyster sauce is not vegetarian, so swap it for vegetarian oyster sauce or extra soy sauce if needed. Tofu, chicken, or shrimp are optional under Variations.

What should I serve with vegetable lo mein?

It is filling on its own. A simple cucumber salad, steamed dumplings, or a light broth-style soup round out the meal.