Hearty and flavorful, this Kabocha Miso Soup is filled with sweet kabocha, umami-rich mushrooms, and nutty sesame seeds. It’s vegan, easy to make, and incredibly delicious!
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When it comes to “miso soup”, the most common image would involve a simple soup with tofu and wakame seaweed. However, in Japan, we make miso soup with a variety of ingredients.
In fact, one of the tricks I use to volumize a meal is to make the miso soup more substantial and fulfilling with hearty ingredients. Today I’ll show you how to make Kabocha Miso Soup (かぼちゃの味噌汁).
Why You’ll Love This Kabocha Miso Soup
- So easy to make
- Hearty, filling, and comforting all at once
- Flavorful – savory, sweet, nutty, packed with flavors
- Plant-based and gluten-free
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Simple 5 Ingredients
To make this soup, you need 5 ingredients.
- Kabocha – It’s available all year round. Check your Japanese and Asian grocery stores.
- Shimeji mushrooms – Or any mushrooms of your choice (you can use other ingredients too)
- White sesame seeds – Highly recommend not to skip them.
- Dashi-Included Miso – Read more about my choice below.
- Water – If you use regular miso, then use Awase Dashi (kombu + katsuobushi) or Vegan Dashi.
MSG-Free, Dashi-Included Miso
Dashi-included miso can be very useful when you live in a place where it’s hard to find dashi ingredients (kombu and katsuobushi).
In this recipe, I used “Maru-Yu” Dashi Iri Yuki Miso by Hikari Miso. It’s organic and MSG-free, and it’s Awase Miso made with 5 types of miso.
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You can purchase this miso along with other Hikari Miso varieties at Japanese grocery stores or Asian grocery stores (like H-Mart).
Just one thing to remember: dashi-included miso tends to be slightly saltier than regular miso, so adjust the amount and taste before you add more.
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Itadakimasu!
You can enjoy this delicious Kabocha Miso Soup on its own or with the following recipes for a complete Japanese meal:
- Instant Pot Brown Rice
- Tamagoyaki (Japanese Rolled Omelette)
- Japanese Salted Salmon (Shiojake)
- Japanese Pickled Cabbage
Other Delicious Kabocha Recipes
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
Kabocha Miso Soup
Ingredients
- 3 Tbsp toasted white sesame seeds
- 1 lb kabocha squash (½ kabocha with seeds)
- 4 cups water (If you‘re not using dashi-included miso, please use Awase Dashi or Vegan Dashi instead of water)
- 3.5 oz shimeji mushrooms (1 pack)
- 4 Tbsp miso (I used Hikari Miso® Dashi-Included Miso (read the blog post); please adjust the amount of miso according to your taste)
Instructions
- Gather all the ingredients.
- In an ungreased frying pan, heat 3 Tbsp toasted white sesame seeds on medium heat until toasty and fragrant. Shake the pan frequently so the sesame seeds don’t get burnt.
- Transfer to the Japanese mortar and pestle (suribachi and surikogi). Grind until 90% of the sesame seeds are crushed and keep 10% uncrushed.
- Discard the seeds from 1 lb kabocha squash and cut into slices ½ inches (1.3 cm) thick. Be careful as kabocha is quite tough to cut.
- Cut the slices into a small chunk, roughly 1-inch pieces. Transfer the kabocha into a medium pot.
- Add 4 cups water (or dashi, if you are not using dashi-included miso) and bring the water to boil over medium heat. Cover the lid leaving a small gap to prevent from boiling over.
- Once boiling, skim the foam and scum on the surface using a fine-mesh skimmer. Reduce the heat to medium-low heat and cook kabocha for 15 minutes, or until tender. Do not overcook as kabocha will break into pieces.
- You can check the kabocha’s doneness by inserting a wooden skewer into the kabocha. Check frequently to prevent it from overcooking.
- When kabocha is ready, remove the bottom of 3.5 oz shimeji mushrooms and add to the soup. Cook for 1–2 minutes until tender.
- Turn off the heat and add 3 Tbsp miso first. Taste before adding another 1 Tbsp miso. You may not need to add more if it‘s flavorful enough to your taste.
- Add the ground sesame seeds and mix well. Serve the miso soup in individual bowls and enjoy!
This is just the inspiration I needed. We’re going to shake up the usual American Xmas Eve dinner this year and are thinking of making a warm and filling tonkatsu ramen for our gathering. But we also needed to find a warm, soupy dish for our vegan peeps so they don’t feel left out. All of the vegan ramen ideas seem to be insanely complicated, so this elegant and filling but still simple miso soup is absolutely perfect.
Hello, Kevin. We’re pleased to hear Nami’s recipe inspired you!
Nami also has a simple and delicious vegan ramen recipe. If you’re interested, please check it out! 😃
https://www.justonecookbook.com/vegetarian-ramen/
Delicious and warming! I used Hikari 50% reduced-sodium miso (our household has to watch the sodium) and it was delicious. The toasted sesame contributed a nice depth and richness to the broth. Thank you for another delicious recipe!
Hello there! We are so happy to hear you enjoyed the flavor of this miso soup!
Thank you so much for trying Nami’s recipe and for your kind feedback!😊
there is nothing wrong with msg. it was proven by double blind studies. people who say it makes them sick are having a psychosomatic reaction, and it comes largely from racism against chinese restaurants in usa. please don’t promote those lies.
Hi, Guillermina. Thank you for taking the time to read Nami’s post and providing feedback.
Nami brought it up because the sponsored miso package says in Japanese 化学調味料・無添加, which translates to “No MSG.”
We get a lot of requests for MSG-free products from our readers, but the imported packages from Japan don’t have any English translations, so Nami is assisting their search by pointing out when it’s MSG-free.
Please keep in mind that she has never stated that MSG is wrong.
She consumes MSG-added products such as curry roux and mayonnaise, but she also tries to extract the natural flavor from the ingredients and enjoy the original taste.🙂
I had to make this with Hondashi granules, but it still turned out really, really good. I loved the long skinny mushrooms and the toasted ground sesame seeds in the broth.
Hi Sarah! We are so happy to hear you enjoyed Kabocha Miso Soup!
Thank you for trying Nami’s recipe and for your kind feedback.
Happy Cooking!
Hi Nami!! I often just make miso soup with tofu but this was the first time i was make it with kabocha. Today i was at the Asian grocery store and i saw this kabocha lying there like it was waiting for me. First i wanted to use it in a curry but i was craving for some warm miso soup today. This recipe was really blew my mind it was so delicious. Luckily i still have half of the kabocha left and will use it for the veggie curry this week. Thanks again for this great recipe and let me taste the great flavor of the Japanese cuisine and home cooking. I hope one day i can travel to japan and learn more about the culture.
Hi Marco! Aww. The image looks fantastic! Nami and all of us at JOC are very happy to see the photo and hear you enjoyed the Kabocha Miso Soup!
Thank you so much for taking the time to provide us with such positive feedback! 🥰
Yes! We hope you will visit Japan one day.😊
This was my first experience cooking japanese food and this soup was everything I dreamed it would be!!!! Amazing, thank you.
Hi Dana! We are happy to hear you enjoyed the homemade Japanese dish!
Thank you for trying Nami’s recipe and sharing your experience.
Happy Cooking!