Yaki Udon with Mushrooms and Bok Choy Recipe
Introduction
Yaki Udon is a quick and flavorful Japanese stir-fry featuring thick udon noodles tossed with fresh vegetables and a savory sauce. This dish is perfect for a satisfying weeknight dinner that comes together in minutes.

Ingredients
- 2 tbsp vegetable oil
- 4 scallions, chopped
- 4 garlic cloves, chopped
- 1 cup sliced shiitake mushrooms
- 3 cups chopped baby bok choy
- 500 grams udon noodles, cooked according to package directions
- 2 tbsp vegetarian oyster sauce (or regular if you aren’t vegetarian)
- 1 tbsp dark soy sauce
- 1 tbsp light soy sauce
- 1 tbsp mirin (can substitute 1 tbsp dry sherry or 1 tsp rice vinegar)
- 1 tbsp honey or agave
- 1 tsp sriracha
Instructions
- Step 1: Mix the vegetarian oyster sauce, dark soy sauce, light soy sauce, mirin, honey (or agave), and sriracha together in a bowl. Set this stir-fry sauce aside.
- Step 2: Heat the vegetable oil in a large skillet over medium-high heat. Add the chopped scallions and garlic, cooking for about 1 minute until fragrant.
- Step 3: Add the sliced shiitake mushrooms and chopped baby bok choy to the skillet. Stir and cook for 3 to 4 minutes until the vegetables are tender and the bok choy has wilted.
- Step 4: Add the cooked udon noodles and the prepared stir-fry sauce to the skillet. Toss everything together to coat the noodles evenly. Allow it to cook undisturbed for at least 30 seconds to let the noodles brown slightly on the bottom.
- Step 5: Remove from heat and serve immediately for best flavor and texture.
Tips & Variations
- For extra protein, add tofu, chicken, or shrimp during step 3 and cook until done.
- Substitute shiitake mushrooms with cremini or button mushrooms if preferred.
- Adjust sriracha to your preferred spice level or omit if you want a milder dish.
- Use fresh-made udon noodles if you can find them for a chewier texture.
Storage
Store leftover yaki udon in an airtight container in the refrigerator for up to 2 days. Reheat gently in a skillet or microwave, adding a splash of water or soy sauce to loosen the noodles as needed.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use frozen udon noodles?
Yes, frozen udon noodles work well. Just thaw them according to package instructions before stir-frying.
Is vegetarian oyster sauce really vegetarian?
Vegetarian oyster sauce is usually made from mushrooms and does not contain any oyster products, making it a great plant-based alternative.
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Yaki Udon with Mushrooms and Bok Choy Recipe
- Total Time: 20 minutes
- Yield: 4 servings 1x
- Diet: Vegetarian
Description
Yaki Udon is a quick and flavorful Japanese stir-fried noodle dish made with thick udon noodles, fresh vegetables like bok choy and shiitake mushrooms, and a savory sauce featuring vegetarian oyster sauce, soy sauces, and a touch of honey and sriracha for subtle sweetness and heat. This vegetarian-friendly recipe is perfect for a satisfying weeknight meal that’s easy to prepare and packed with umami flavors.
Ingredients
Vegetables & Aromatics
- 4 scallions, chopped
- 4 garlic cloves, chopped
- 1 cup sliced shiitake mushrooms
- 3 cups chopped baby bok choy
Noodles
- 500 grams udon noodles, cooked according to package directions
Sauce
- 2 tbsp vegetarian oyster sauce (or regular if you aren’t vegetarian)
- 1 tbsp dark soy sauce
- 1 tbsp light soy sauce
- 1 tbsp mirin (can substitute 1 tbsp dry sherry or 1 tsp rice vinegar)
- 1 tbsp honey or agave
- 1 tsp sriracha
Cooking Oil
- 2 tbsp vegetable oil
Instructions
- Prepare stir fry sauce: In a small bowl, mix together vegetarian oyster sauce, dark soy sauce, light soy sauce, mirin, honey (or agave), and sriracha until well combined. Set aside.
- Sauté aromatics: Heat vegetable oil in a large skillet over medium-high heat. Add chopped scallions and garlic and cook for 1 minute until fragrant but not browned.
- Cook vegetables: Add sliced shiitake mushrooms and chopped baby bok choy to the skillet. Stir and cook for 3-4 minutes, allowing the vegetables to become tender and the bok choy to reduce in volume.
- Add noodles and sauce: Add cooked udon noodles to the skillet along with the prepared stir fry sauce. Toss everything together to evenly coat the noodles and vegetables with the sauce.
- Brown the noodles: Let the noodles cook undisturbed for at least 30 seconds to allow slight browning on the bottom, enhancing the texture and flavor.
- Serve: Remove skillet from heat and serve the yaki udon immediately while hot.
Notes
- Use vegetarian oyster sauce for a vegetarian or vegan version; regular oyster sauce can be used otherwise.
- Mirin can be substituted with dry sherry or rice vinegar for similar acidity and sweetness.
- For spicier noodles, increase the sriracha amount according to taste.
- Ensure udon noodles are cooked and drained well before stir-frying to avoid sogginess.
- This dish can be customized with additional vegetables or protein such as tofu or chicken.
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Category: Main Course
- Method: Stovetop
- Cuisine: Japanese
Keywords: Yaki Udon, Japanese stir fry noodles, udon recipe, vegetarian udon, shiitake mushrooms, bok choy, quick stir fry

