Menu Enter a recipe name, ingredient, keyword...

Slow Cooker Japanese Onion Soup


This soup couldn't be more simple and is a great addition to any asian style dinner. I had this broth simmering on my counter all day long, and the outcome was nothing short of fantastic.

Google Ads
Rate this recipe 4.3/5 (34 Votes)


  • 2 medium carrots
  • 2 medium celery stalks
  • 2 garlic cloves, smashed
  • 6 cups chicken broth, reduced sodium fat free
  • 1 medium Onion, cut into wedges
  • 8 ounces mushrooms, sliced
  • 4 green onions, sliced (Optional Garnish)


Servings 6
Adapted from


Step 1

Place everything but the mushrooms and green onions into a slow cooker.

I added in the bottom halves of the chopped green onions at this time as well and reserved the green upper halves for garnishing.

Cover and cook on high for 2-4 hours or low for 4-5 hours.

An hour before serving remove the cooked veggies from the crock pot with a slotted spoon

Place the sliced mushrooms into the crock pot with the broth.

Give it all a good stir.

Cover to cook for another hour or until the mushrooms are tender.

Divide amongst the bowls and serve!

You'll also love

Review this recipe

Pork Tenderloin and Mushroom Stew with Apple Potato Mash Minestrone Soup