Spicy Miso Udon – A bowl of comforting udon noodles coated in a fragrant and flavourful spicy miso sauce. Almost as easy to make as instant ramen, this spicy miso udon is great for a quick and easy meal! The ONLY cooking required is to boil the noodles. All that’s left to do is mix the sauce and toss in the udon noodles. You will only need is 15 minutes… maybe even 10!

WHAT YOU’LL NEED FOR THIS RECIPE
Noodles
Udon noodles Dried, shelf stable, or frozen. Udon noodles can be substituted with other noodles, please see our pro tips below*.
Spicy Miso Sauce

Miso paste Either white or red miso paste
Hot water
Sesame seed Toasted
Light soy sauce
Rice wine vinegar
Dark soy sauce To add colour to this noodle dish.
Brown sugar If brown sugar is not available, use regular white sugar instead
Ginger Minced
Chili oil Use your favourite chili oil. For me, I love using ‘Xiang Li Wang’ chili oil as it is very spicy yet does not add too much additional flavour that may affect the overall flavour of this dish.
Optional Garnish
Scallions Thinly sliced
Fried shallots Homemade or store-bought. You should be able to find fried shallots in the Asian section of your local supermarket or Asian grocer.
HOW TO MAKE SPICY MISO UDON NOODLES
Cook udon noodles as directed on the package. Drain and set aside.
To make the sauce, in a large bowl, mix miso and hot water until combined. Add remaining ingredients and mix until combined.
Add in udon noodles and toss in the sauce until evenly coated.

Transfer to serving bowls, garnish, and serve immediately.
PRO TIPS
Type of udon For the authentic thick and chewy udon texture, use fresh, shelf stable or frozen udon noodles. However, if you only have the dried version on hand (that’s me!), this dish will still be really delicious.
*Try it with different noodles This recipe will also be delicious with Korean jajangmyeon noodles, knife cut noodles, instant ramen noodles, and even pasta! If you are using pasta, I recommend using angel hair pasta or spaghetti.
Spice level The amount of chili oil you use depends how spicy you want your noodles to be. I recommend starting with 1 teaspoon of chili oil, taste the sauce, and gradually add more as necessary. Alternatively, add a conservative amount of chili oil to the miso sauce, toss in the noodles, and add more chili oil for more spice if desired. Remember, you can always add more chili oil, but cannot remove it.
MORE GARNISH AND SIDE DISH OPTIONS
Like many Asian noodle dishes, the garnish options are endless. Here are some of my favourite toppings for this spicy miso udon:
- Toasted sesame seeds
- Thin strips of seaweed
- Fried egg
- Yellow pickled radish
- Thinly sliced cucumber
- Cilantro

This spicy miso udon also goes well with side dishes too! Here are some delicious side dish inspiration:
- Homemade fried wontons
- Salt and pepper tofu bites
- Thin slices of beef or pork
- Karaage Chicken
FREQUENTLY ASKED QUESTIONS
Can I make spicy miso udon ahead of time?
These spicy miso udon noodles are best served soon after being made. However, you can also make them ahead of time. These noodles will also be great to pack in a lunch box to bring to school or work.
Store the noodles in an air-tight container and refrigerate for up to 2 days.
You can either heat the noodles up in a microwave, or eat them cold. However, this option will only work on certain types noodles, such as: pasta (angel hair pasta or spaghetti), soba noodles, and dried udon noodles (not the traditional thick chewy kind).

How to store leftover spicy miso udon?
Store any leftovers in an air-tight container and refrigerate for up to 2 days. Reheat the noodles in a microwave.
Alternatively, you can make a spicy cold noodle salad with leftover spicy miso noodles. Add some salad greens, toss it in the noodles, and eat cold. Do this if you are using thin noodles. If you have made this dish with thick noodles, you will need to serve it warm or hot for a more pleasant experience.
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Spicy Miso Udon
Ingredients
- 2 serves udon noodles dried, shelf stable, or frozen
Spicy Miso Sauce
- 1.5 tbsp miso paste white or red
- 2 tsbp hot water
- 1 tbsp sesame seeds
- 2 tsp light soy sauce
- 2 tsp rice wine vinegar
- 1/2 tbsp dark soy sauce
- 3 tsp brown sugar
- 1 tsp ginger minced
- 1-3 tsp chilli oil to taste
Garnish (optional)
- 2 stalks scallions thinly sliced
- 2 tbsp fried shallots
Instructions
- Cook udon noodles as directed on the package. Drain and set aside.
- To make the sauce, in a large bowl, mix miso and hot water until combined. Add remaining ingredients and mix until combined.
- Add in udon noodles and toss in the sauce until evenly coated.
- Transfer to serving bowls, garnish, and serve immediately.