Sweet potato lemongrass soup | vegan soup | vegan recipes | Thai influenced soup is sweet, aromatic, hearty and so flavourful | Asian flavours | Gluten-free |
Plant Powered,  Soups & Stews

Sweet potato, lemongrass and coconut soup

I am so excited to finally be posting this recipe.  You guys, I have been working on this baby for a while now and I LOVE the finished product.

This Thai influenced soup is sweet, aromatic, hearty and so flavourful.  It also happens to be vegan and gluten-free. But, for those of you real creamy soup loving fans, I promise you won’t miss a thing.

So get your aprons on (does anyone actually wear aprons?), turn on some tunes and get cooking.  It’s still the perfect time of year to make and eat a big ‘ol bowl of soup, especially one as good as this.




I garnished our soup with toasted cashews, fresh chopped cilantro, dried red chili, a fresh wedge of lime and a dollop of coconut cream and I absolutely love the layers it added to the soup.  But there are so many options; you could try toasted peanuts, mint, basil, turmeric root, or fresh ginger.



Sweet potato lemongrass soup | vegan soup | vegan recipes | Thai influenced soup is sweet, aromatic, hearty and so flavourful | Asian flavours | Gluten-free |

Sweet Potato Lemongrass and Coconut Soup

Yield: 6
Prep Time: 15 minutes
Cook Time: 45 minutes
Additional Time: 10 minutes
Total Time: 1 hour 10 minutes

This Thai influenced soup is sweet, aromatic, hearty and so flavourful and also happens to be vegan and gluten-free


  • 2 tbsp coconut oil
  • 2/3 cup yellow onion, finely diced
  • 4 garlic cloves
  • 11/2 tsp of freshly grated ginger
  • 1 tsp turmeric
  • 2 tsp chili powder
  • 2 tsp coriander
  • 1/4 tsp pepper
  • 4 cups of roasted mashed sweet potato*
  • 3 cups of vegetable broth
  • 2 cups of coconut milk
  • 3 tbsp of fresh squeezed lime juice
  • 1/2 cup of thinly sliced lemongrass
  • 1 tbsp + 1 tsp of Tamari (gluten-free soy sauce)*
  • salt to taste
  • toasted peanuts or cashews
  • cilantro, mint or thai basil
  • dried red chili
  • coconut cream or milk
  • fresh lime wedge


  1. Heat the oil in a large, heavy bottom pot (see below for some of my favourites).
  2. Add the onions and saute until translucent about 2-3 minutes.  Add the garlic and the lemongrass and saute for another 2-3 minutes.
  3. Next add the turmeric, chili powder, coriander, and pepper and toss until the spices have dissolved into the oil. Let cook for a minute.
  4. Add the lime juice and Tamari and stir to mix.  Then add the coconut milk and vegetable broth, bring mixture to a boil,  then add the mashed sweet potato.  Stir heavily until the sweet potato has broken up into the soup.  Let soup begin to bubble, then reduce heat and simmer for half an hour.
  5. If you have an immersion blender, use that to blend the soup.  If not pour the soup into a blender (you can two in a couple batches if need be) and blend until pureed.  Add the soup back to the pot and let simmer for another 10-15 min.
  6. Serve garnished with your choice from the suggestions above.


*If you're not gluten-free, just use regular soy sauce.  

*For the sweet potato, 2 average sweet potatoes will give you about 4 cups mashed. Cut the sweet potato in half and roast open side down on parchment lined baking sheet at 425F for about 45 to 50 min. Let cool, then scoop out the sweet potato.

Nutrition Information:
Yield: 6 Serving Size: 1
Amount Per Serving: Calories: 425Total Fat: 31gSaturated Fat: 23gTrans Fat: 0gUnsaturated Fat: 5gCholesterol: 27mgSodium: 509mgCarbohydrates: 31gFiber: 3gSugar: 10gProtein: 11g

Nutritional information is provided as a courtesy and is an estimate only. This information comes from online calculators and not from My Sweet Mess. Although we do attempt to provide as accurate nutritional information as possible, these figures are only estimates.

This soup is so incredibly satisfying, you will be warm, full and your belly will be happy.  The sweet, earthiness from the sweet potatoes, with the richness of the coconut milk and the fragrant lemongrass paired with the tanginess from the fresh lime and Tamari – is just spectacular.   The flavours meld so well into one another; there’s something almost umami about it.

If you don’t have a heavy bottom pot that you love, here is one that I like.


If you love soup, here are a few more vegan recipes on the site that you might like:

Carrot apple ginger soup

Sweet potato tomatillo soup

Savoury roasted carrot tomato and red pepper soup

Creamy vegan leek and celery soup

And if you’re looking for ways to use your sweet potatoes, look no further:

Sweet potato and black bean enchiladas

Sweet potato and black bean hash

Sweet potato protein bowl with maple tahini

If you give this soup a try, I would LOVE to hear from you, comment on the blog or post a picture on Instagram and tag me @mysweetmess and hashtag #mysweetmessrecipes.  

Till the next recipe,

Kristen xo


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