In a small mixing bowl, mix together all of the sauce ingredients, set aside.
Cook the noodles according to the package directions. Drain and set aside.
Heat the oil in a large wok, sauté the onion and garlic for 1-2 minutes.
Add the cabbage, carrot and broccoli florets. Continue to sauté for 5 minutes until cooked and tender. You may need to add 2-3 tbsp water to the wok to help cook the vegetables.
Next, add the snow peas and bean sprouts, sauté for a couple of minutes before adding the sauce and noodles.
Cook for 2-3 minutes while the sauce thickens, add half of the sliced green onion and toss to coat all ingredients.
Serve immediately topped with remaining sliced green onion and toasted sesame seeds.
Stored cooked vegan chow mein in an airtight container in the fridge for up to 4 days.