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Mains

Vegetable Udon Noodle Stir Fry

September 15, 2021 by Alexandra Daum
Time: 15 minutes   Servings: 4
Ready in 15 minutes, this easy vegetarian udon noodle stir fry is packed with veg. With a two-ingredient sauce, it's a great weeknight meal.
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Close up of a stir fry noodle bowl with lime wedges.

We can’t get Japanese takeout where I live now – even the ingredients to make it at home have only become more available in that last couple of years – but this simple udon noodle stir fry is a weeknight dinner mainstay for us.

Loaded with vegetables, it’s a kind of Yaki udon, but with oyster mushrooms acting as a meat sub. There are a hundred types of Yaki udon, of course, since it’s just fried noodles, and it’s a great quick meal.

I used to get packages of fresh udon noodles as a treat when I was a kid, and make a kind of soup with powdered broth and these fresh noodles. It was my absolute favourite and this is my adult equivalent of that same meal (with a lot more vegetables for my aging bod).

This can be even easier if you use fresh udon noodles – see notes below for more on that.

The recipe card states that this is 20 minutes total, but since you can cook and prep the vegetables to go into the pan at the same time, it’s more like 15 minutes. If you have a hard time with multitasking while cooking, allow for a little longer.

Ingredients

  • Mushrooms: oyster mushrooms are the best here, with an excellent meaty texture.
  • Onion: red or white, it doesn’t matter. Tennis ball sized or smaller.
  • Carrots: either slice on an angle, as pictured, or julienne the carrots.
  • Zucchini: the one pictured is a bit big, and I only used half.
  • Red Pepper: a pointed pepper as pictured or a capsicum/bell pepper.
  • Garlic: thinly sliced – mince if you prefer a more subtle garlic flavour.
  • Ginger: as with the garlic, the ginger can be finely grated if you don’t want to come across pieces of it in the stir fry (though the pops of spicy sliced ginger is kind of the point).
  • Coconut Aminos: or sub soya sauce, see below for more on that.
  • Lime: this is an important acidic element, and the stir fry will taste flat without it.
  • Udon Noodles: dried are used, and every brand requires a slightly different cooking time, so check the package.
  • Cashews: a nod toward added protein and healthy fat, this is really more for texture. Toast the cashews if you want a slightly smokey flavour.
Udon noodle stir fry ingredients.

Step by Step

  • Oyster mushrooms in a large frying pan with olive oil.
    Sear the mushrooms for 3-4 minutes.
  • Onion added to the pan with the mushrooms.
    Stir in the sliced onion.
  • Cooked carrot, onion, and mushrooms.
    Add the carrots.
  • Onion and garlic added to the pan.
    Add the zucchini and pepper.
  • Finished stir fry vegetables.
    Stir in the garlic and ginger.
  • Coconut aminos added to the cooked vegetables.
    Add the aminos and lime juice.
  • Cooked noodles added to the pan.
    Add the cooked udon noodles.
  • Mixing the noodles in with tongs.
    Toss to coat the noodles.
  • Finished stir fry after mixing the noodles in.
    Serve with extra lime.

Notes and Substitutions

The most important thing for this recipe is to be sure that the mushrooms are seared, not steamed. High heat, little to no stirring. Oyster mushrooms don’t contain as much water as some other varieties and have a great texture, but they can be more expensive, so use button mushrooms as a substitute.

If you want to use fresh noodles, simply stir them directly into the pan with the garlic and ginger and cook for a couple minutes. If you want to go all homemade, make your own udon noodles or try Chinese egg noodles. Rice noodles can be substituted.

Change up the vegetables based on what you prefer and have on hand. Broccoli, sweet potato, kohlrabi – all good here. Frozen can be used too.

If you eat it, soya sauce can be subbed for the coconut aminos. It usually has a stronger flavour and higher salt content, so it may need to be reduced slightly.

Use lemon in place of lime in a pinch. Leave the cashews out if you don’t like them, or sub something like peanuts.

There is no salt added to the recipe because the coconut aminos add seasoning. I recommend tasting and seasoning after cooking if needed, or you’re at high risk of over-salting.

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Yield: 4

Vegetable Udon Noodle Stir Fry

Prep Time 10 minutes
Cook Time 10 minutes
Total Time 20 minutes
5 from 1 vote

Ingredients

Metric – American
  • 275 grams udon noodles
  • 2 teaspoons olive oil
  • 200 grams oyster mushrooms, roughly chopped
  • 1 small onion halved and thinly sliced
  • 2 medium carrots thinly sliced
  • 1 small zucchini ~150 grams / 5 oz., halved and thinly sliced
  • 1 red pepper halved and thinly sliced
  • 2 cloves garlic thinly sliced
  • 1 thumb ginger about 5cm / 2 in., thinly sliced
  • ¼ teaspoon hot pepper flakes optional
  • Large handful cashews ~50 g / 1/2 cup
  • 2 tablespoons coconut aminos to taste
  • Juice of a lime ~2 tablespoons
  • Green onion for topping (optional)

Instructions

  • If using dried udon noodles, cook according to package instructions. If the noodles are ready before the vegetables, simply set aside until ready to use. Everything should be ready at the same time if the noodles are started at the same time as the stir fry.
    275 grams udon noodles
  • Place a large pan over medium-high heat. Once the pan is hot, add the olive oil and mushrooms. Sear the mushrooms, avoiding stirring, for 3-4 minutes, or until golden and reduced in size by about half.
    2 teaspoons olive oil, 200 grams oyster mushrooms, roughly chopped
  • Add the onions and cook for another minute. Stir in the carrots and cook for another 2-3 minutes, until they start to brown slightly.
    1 small onion, 2 medium carrots
  • Add the zucchini and peppers and stir frequently, cooking for another couple of minutes.
    1 small zucchini, 1 red pepper
  • Stir in the garlic, ginger, hot pepper flakes, and cashews, cooking for about a minute.
    2 cloves garlic, 1 thumb ginger, 1/4 teaspoon hot pepper flakes, Large handful cashews
  • Add the coconut aminos and lime juice, and stir to coat the vegetables. Add the cooked udon noodles and toss, making sure the noodles are fully coated in the sauce.
    2 tablespoons coconut aminos, Juice of a lime
  • Taste and season with more coconut aminos or sea salt. Top with green onions (optional). Serve immediately, with extra lime wedges if desired. Leftovers keep well for a day or two in the refrigerator and can be eaten cold.
    Green onion

Notes

The most important thing for this recipe is to be sure that the mushrooms are seared, not steamed. High heat, little to no stirring. If there’s water in the pan, turn up the heat until it evaporates.
If you want to use fresh noodles, simply stir them directly into the pan with the garlic and ginger and cook for a couple minutes rather than one.
If you eat it, soya sauce can be subbed for the coconut aminos. It usually has a stronger flavour and higher salt content, so it may need to be reduced slightly.
There is no salt added to the recipe because the coconut aminos add seasoning. I recommend tasting and seasoning after cooking if needed, or you’re at high risk of over-salting.

* For American cup measurements, please click the pink link text above the ingredient list that says ‘American’.


Nutrition

Serving: 1 Calories: 320kcal Carbohydrates: 60g Protein: 14g Fat: 4g Saturated Fat: 1g Polyunsaturated Fat: 1g Monounsaturated Fat: 2g Sodium: 1036mg Potassium: 528mg Fiber: 7g Sugar: 11g Vitamin A: 5363IU Vitamin C: 29mg Calcium: 31mg Iron: 1mg

Nutrition is provided as a courtesy and is an estimate. If this information is important to you, please have it verified independently.

© Alexandra Daum
Course: Mains
Cuisine: Japanese
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