top down view of a bowl with serving of soba noodle soup with bok and mushrooms.

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5 from 6 reviews

A simple and hearty soba noodle soup with my favorite buckwheat noodles, earthy mushrooms, and bok choy!


  • 1 package (9 oz) soba noodles
  • 4 oz. shiitake, oyster or mushrooms (see notes for using dried wild mushrooms)
  • 23 baby bok choy, ends trimmed
  • 23 tablespoons miso (use your favorite)
  • 4 cups water
  • 24 oz. cubed tofu, optional


  • 2 scallions, sliced
  • fresh cilantro sprigs
  • sesame seeds
  • red pepper flakes (optional)


Noodles: Cook your soba noodles according to package, rinse under cool water, set aside.

Stir-fry mushrooms: In a wok or medium pan, heat 1 tablespoon dark sesame oil or 1/4 cup water over medium-high heat, add fresh chopped mushrooms and stir fry for 4 – 5 minutes. Add a little tarmari for a little extra flavor.

Add remaining ingredients: Reduce heat to medium, pour 4 cups of water into the pan, and add the bok choy. Stir in the miso and gently stir to dissolve. Cook over medium to medium-low heat for 10 -15 minutes, or until bok choy is tender, stirring occasionally (don’t let the soup boil). Add the optional tofu to the soup to warm through.

Assemble: In individual serving bowls, add 1/2 soba noodles and top with 1/2 bok choy, mushrooms. and miso broth over top. Top with cubed scallions, cilantro sprigs and sesame seeds.

Serves 2

Store: Leftovers can be kept in the refrigerator for up to 3 – 4 days, in a covered container.


If you don’t have miso on hand, sub in some low-sodium veggie broth. 

Using dried mushrooms: In a small saucepan, warm 4 cups of water over medium heat (do not boil), add dried mushrooms, lower heat and let simmer, uncovered for 10 minutes. Add miso, stir to remove any clumps, add bok choy and continue to keep the soup warm over low heat, until bok choy is tender.

Soy-free: If you have soy allergies, try using other miso’s which don’t contain soy such as chickpea miso.

Soba Noodles: You can purchase gluten-free 100% buckwheat noodles by Eden Buckwheat Noodles or King Soba Noodles from Amazon (affiliate links).

Nutrition facts are calculated without the optional tofu.