Udon Noodle Recipe Vegetarian: Quick & Flavorful Ideas

Updated On: October 4, 2025

If you’re craving a bowl of cozy, slurp-worthy noodles packed with flavor and veggies, this vegetarian udon noodle recipe will satisfy your soul and your taste buds. Udon noodles are beloved for their chewy texture and ability to soak up savory broths.

In this recipe, we build a fragrant, umami-rich vegetarian broth and toss in a rainbow of vegetables for a meal that’s both nourishing and utterly delicious. Whether you’re a die-hard noodle lover or simply looking to add more meatless meals to your routine, this dish is quick, easy, and endlessly adaptable.

Plus, it’s a fantastic way to use up those leftover veggies in your fridge. Let’s get ready to create a comforting bowl that rivals your favorite Japanese restaurant, right at home!

Why You’ll Love This Recipe

  • Quick and Easy: With simple prep and minimal cook time, you can have dinner on the table in under 30 minutes.
  • Super Satisfying: The springy texture of udon noodles combined with a rich, aromatic broth makes every bite comforting and filling.
  • Colorful and Nutritious: Packed with a variety of vegetables, this recipe delivers plenty of fiber, vitamins, and minerals in every serving.
  • Customizable: Swap in your favorite veggies or tofu to suit your tastes or whatever’s in your fridge.
  • Perfect for All Seasons: Enjoy it piping hot in winter or slightly cooled in warmer months—it’s delicious any time of year.
  • Family Friendly: Mild, savory flavors and fun, slurpable noodles make this a hit with both kids and adults.

Ingredients

Here’s what you’ll need to make a generous pot of vegetarian udon noodles for 2-3 people:

Ingredient Amount Notes
Fresh or frozen udon noodles 400g (about 14oz) Frozen gives best texture, but dried is fine
Vegetable broth 5 cups Low-sodium preferred
Shiitake mushrooms 1 cup, sliced Or substitute cremini/button mushrooms
Carrot 1 medium, julienned
Bok choy 2 small heads, quartered Or sub baby spinach or napa cabbage
Snow peas 1/2 cup, trimmed
Firm tofu 200g (7oz), cubed Optional, for extra protein
Garlic 2 cloves, minced
Ginger 1-inch knob, grated Fresh is best
Soy sauce 3 tbsp Or tamari for gluten-free
Mirin 1 tbsp Or sub 1 tsp sugar + 1 tsp rice vinegar
Sesame oil 1 tbsp For flavor and sautéing
Green onions 2, sliced For garnish
Toasted sesame seeds 1 tbsp For garnish
Chili oil or sriracha to taste Optional, for serving

Equipment

  • Large soup pot
  • Medium saucepan (for noodles, if boiled separately)
  • Sharp chef’s knife
  • Cutting board
  • Wooden spoon or spatula
  • Ladle
  • Measuring cups and spoons
  • Colander (for draining noodles)
  • Bowls for serving

Instructions

  1. Prepare the vegetables and tofu:

    Wash and slice the shiitake mushrooms, julienne the carrot, quarter the bok choy, and trim the snow peas. If using tofu, pat it dry and cut into bite-sized cubes.

  2. Sauté aromatics:

    Heat sesame oil in your large soup pot over medium heat. Add minced garlic and grated ginger, sautéing gently for 1-2 minutes until fragrant but not browned.

  3. Add mushrooms and tofu:

    Add the sliced mushrooms and cubed tofu (if using) to the pot. Cook, stirring often, for about 3 minutes until mushrooms start to soften and tofu is lightly golden on the edges.

  4. Create the broth:

    Pour in the vegetable broth, soy sauce, and mirin. Bring to a gentle simmer.

  5. Add remaining vegetables:

    Stir in the carrot, bok choy, and snow peas. Simmer for 3-5 minutes until veggies are just tender but still bright and crisp.

  6. Cook the udon noodles:

    If using fresh or frozen udon, add them directly to the pot and simmer for 2-3 minutes until heated through. If using dried udon, cook them first in a separate saucepan according to package instructions, then drain and add to the soup.

    For best texture, slightly undercook the noodles as they’ll continue to soften in the broth.

  7. Taste and adjust:

    Taste the broth and adjust seasoning as needed—add more soy sauce for saltiness, a dash of mirin for sweetness, or a bit more ginger for zest.

  8. Serve:

    Ladle the noodles, vegetables, and broth into bowls. Top with green onions, toasted sesame seeds, and a drizzle of chili oil or sriracha if desired.

Tips & Variations

  • Make it gluten-free: Swap regular soy sauce for tamari and use gluten-free udon noodles.
  • Change up the veggies: Try adding baby spinach, napa cabbage, bell peppers, corn, or any quick-cooking vegetable you need to use up.
  • Boost the protein: Add extra tofu, edamame, or even a poached egg (if not vegan).
  • Broth depth: For a deeper umami flavor, add a teaspoon of white miso paste or a dash of mushroom powder to the broth.
  • Spice it up: Serve with chili crisp, sriracha, or a sprinkle of togarashi.
  • “Don’t overcook the vegetables—keep them bright and crisp for the freshest flavor and best nutrition.”

  • Leftovers: Store noodles and broth separately if possible; reheat gently to avoid mushy noodles.

Nutrition Facts

Nutrient Per Serving (1/3 recipe)
Calories 340
Protein 14g
Carbohydrates 56g
Fat 7g
Fiber 6g
Sodium 1130mg
Vitamin A 110%
Vitamin C 35%
Iron 15%
Calcium 12%

Values are approximate and will vary based on specific brands and your choice of vegetables and broth.

Serving Suggestions

  • Pair with a side salad: Try a crisp Asian-style salad or a light cucumber salad for a refreshing contrast.
  • Add a dipping sauce: Serve with extra soy sauce, chili oil, or ponzu for dipping noodles or tofu.
  • Make it a feast: Add a side of steamed edamame or some homemade vegetable crackers for crunch.
  • Complete the meal: Finish with a light dessert like fruit or try a slice of vegetarian date cake for something sweet.
  • Lunchbox friendly: Pack leftover noodles and broth separately in thermos containers for a satisfying lunch on the go.
  • Try fusion: Serve alongside vegetarian Swiss chard dishes for a creative, global meal.

Conclusion

This vegetarian udon noodle recipe is proof that comfort food can be both wholesome and exciting. The mix of chewy noodles, rich, savory broth, and colorful veggies creates a bowl that is as nourishing as it is crave-worthy.

Whether you’re new to Japanese cuisine or a seasoned noodle enthusiast, you’ll love how easy it is to bring restaurant-quality flavors to your own kitchen. Don’t be afraid to experiment with seasonal vegetables or adjust the toppings to your liking—the beauty of udon is its versatility.

For more inspiration on plant-based comfort food, check out these craveable dishes: Vegetable Alfredo Recipes for Creamy, Healthy Dinners and Veg Recipes for Slow Cooker: Easy, Tasty Meal Ideas. Your next favorite dinner might just be a noodle bowl away!

📖 Recipe Card: Vegetarian Udon Noodle Soup

Description: A comforting bowl of thick udon noodles in a savory, umami-rich vegetarian broth. Packed with colorful vegetables and simple to prepare for a quick weeknight meal.

Prep Time: PT15M
Cook Time: PT20M
Total Time: PT35M

Servings: 4 servings

Ingredients

  • 12 oz fresh udon noodles
  • 6 cups vegetable broth
  • 1 tablespoon soy sauce
  • 1 tablespoon miso paste
  • 1 tablespoon sesame oil
  • 2 cloves garlic, minced
  • 1 inch ginger, grated
  • 1 cup sliced shiitake mushrooms
  • 1 cup baby spinach
  • 1 medium carrot, julienned
  • 2 scallions, sliced
  • 1 sheet nori, cut into strips (optional)

Instructions

  1. Heat sesame oil in a large pot over medium heat.
  2. Add garlic and ginger, sauté for 1 minute.
  3. Add mushrooms and carrots, cook for 3-4 minutes.
  4. Pour in vegetable broth and bring to a simmer.
  5. Stir in soy sauce and miso paste until dissolved.
  6. Add udon noodles and cook according to package instructions.
  7. Add spinach and cook until wilted, about 1 minute.
  8. Ladle soup into bowls and garnish with scallions and nori.

Nutrition: Calories: 320 kcal | Protein: 10 g | Fat: 7 g | Carbs: 56 g

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Photo of author

Marta K

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