Sweet potato and red chilli soup is packed with flavour with the combination of the sweetness of the sweet potato balancing out the heat of the red chillies.
Best of all, it’s quick and easy to make in a soup maker so that you can have a bowl of piping hot soup in no time!

What You Need To Make This Soup
As with many soup maker recipes, you can be flexible with the measurements and switch ingredients depending on what you have available.

Sweet Potatoes
You will want to use between 600g and 800g of chopped sweet potatoes – the exact amount will depend on which soup maker you are using.
I have made this soup in a Morphy Richards Soup Maker and a Ninja Soup Maker. The Morphy Richards is slightly bigger in size and so can fit 800g of sweet potatoes in; for the Ninja, the capacity is less, so aim for around 600g to 700g, depending on how thick you like your soup.
You Might Like: Choosing A Soup Maker
Onion & Garlic
I added 1 small onion and 3 cloves garlic. I just added the onions quartered with the whole peeled garlic cloves to the Ninja and pressed the chop button.
You can optionally saute them if your soup maker has this function – I find myself sauteeing less these days, and I’m not noticing a huge difference in taste.
Red Chillies
The number of chillies you add will depend on the chilli variety and how hot you like your soups. Most recently, I used Birds Eye Chilli, a hotter variety, so I only used one, I left the seeds in, and it was the perfect level of heat for me. You might prefer more or less.
You Might Like: Growing Chillies At Home
Stock
I added one vegetable stock pot directly to the soup maker and then added hot water to the maximum line.
If you enjoyed this soup maker recipe, you might be interested in my soup maker recipe book that is available on Amazon.
Making The Soup (In A Soup Maker)

Prepare all the ingredients by peeling and chopping them. Make sure the sweet potatoes are chopped fairly small so that the soup maker can cook them all the way through.
Peel and quarter/chop the onion and peel the garlic cloves.
You can either crush or thinly slice the garlic cloves – or, with a Ninja Soup Maker, put them in whole with the quartered onions and use the ‘chop’ function to slice them.

Carefully slice the red chilli, remembering to wash your hands well afterwards!
Add the sweet potato, chilli and vegetable stock pot before pouring hot water up to the line.

Set the soup maker off on smooth.
Serve and season according to taste.

Variations To This Soup
- Add in a can of coconut milk
- Stir in some dried red chilli flakes at the end if you prefer a spicier soup
More Sweet Potato Soup Maker Recipes
If you are looking for more sweet potato soup recipes for your soup maker check out the following for inspiration:
- Jamaican Jerk Sweet Potato Soup
- Spiced Edamame and Sweet Potato Soup
- Carrot and Sweet Potato Soup
- Sweet Potato and Lentil Soup
- Sweet Potato and Bacon Soup

Sweet Potato and Red Chilli Soup (In A Soup Maker)
Some of the links in this post may be affiliate links – which means if you buy the product I get a small commission (at no extra cost to you). If you do buy, then thank you! That’s what helps us to keep Liana’s Kitchen running.
Ingredients
- 600 g sweet potatoes chopped
- 1 onion chopped
- 3 cloves garlic
- 1 red chilli sliced
- 800 ml vegetable stock approx
Instructions
- Add all ingredients to the soup maker.
- Set soup maker off on to smooth.
- At the end of the soup maker cycle check the consistency and add more water if it is too thick. Season according to taste.
Notes
If you want a thicker soup increase the amount of sweet potato and reduce the amount of stock. Likewise if you want a thinner soup, reduce the amount of sweet potato and increase the stock. Heat Factor If you prefer a milder heat, just add half a chilli!
Nutrition
Nutrition information is automatically calculated, so should only be used as an estimate.



June
Thursday 1st of January 2026
Eating a bowl of this as I write ! So easy … used a Ninja soup maker, and produced a most delicious and nutritious soup . Just right for a cold January day ! It’s thick, smooth, totally warming and tasty. Beats ready made shop sold soup hands down - for cost, taste and nutrition. This recipe produced two large portions for the freezer, and a large bowl to enjoy now…..more if you’re not into such large portions! One to be making again. Going to try the chicken noodle soup next.
Charlene Johnson
Saturday 29th of November 2025
Just made the sweet potato and red chilli soup, omg it was delicious. Definitely making it again 😀
John O'Brien
Thursday 12th of December 2019
This was so delicious, and so easy too, I used a red onion and just 1 chilli without the seeds, and it was fabulous, I will definitely be making this again. Thanks Liana
Fiona Stacey
Tuesday 26th of November 2019
Is it totally OK to not saute items such as onions and garlic etc? I got a soup maker purposely to cut out all that extra faff that's all. Thankyou for the great recipes.
Liana Green
Tuesday 26th of November 2019
Hi Fiona - yes absolutely fine to skip the saute step - I only include it as my soup maker has that function built in. I'm all for cutting out the extra faff where possible! Hope you enjoy your soup maker :)
Miss Yvonne Bailey
Friday 18th of October 2019
I just made this soup for the first time, it's lovely. I will be making it again.
Liana Green
Friday 18th of October 2019
Thanks for your comment - I'm happy to hear you enjoyed this soup!