Do you like trying different soups to keep your diet interesting in the winter? I know I do and this celery soup is no exception. Diet celery soup is something that is often searched for so this is the perfect celery soup recipe for that.

An easy-to-make soup full of vegetables and perfect for weight loss. If you follow Slimming World, Weight Watchers (WW), Noom or any other weight loss plan you can usually count this as free or easily within your allowances.

Disclaimer: Just Average Jen is not connected with any weight loss plan. Please check nutritional values and/or syns yourself as these are approximate to the best of my knowledge.

Why you should have celery in your diet

Often dubbed as a ‘superfood,’ celery is a crunchy and refreshing addition to any meal. It has many benefits which you should consider as it is really quite wonderful and in some recipes tastes very different to how it tastes raw. For example, I hate it raw but like it cooked into recipes.

Nutritional Value of Celery

Celery is a low-calorie vegetable that is packed with nutrients, making it a fantastic addition to any healthy diet. One of the key features of celery is its high water content, which makes it incredibly hydrating.

Additionally, it is an excellent source of vitamin K, vitamin C, and folate. It also contains potassium, calcium, and magnesium, which are vital minerals that support many important bodily functions.

Anti-inflammatory Properties

Celery contains a unique compound known as polyphenols, which have anti-inflammatory properties. These compounds have been shown to reduce inflammation in the body, which is essential for preventing chronic diseases such as arthritis, heart disease, and cancer.

Supports Digestive Health

Celery is an excellent source of fibre, which is crucial for good digestive health. Fibre helps regulate bowel movements, promotes satiety, and feeds beneficial gut bacteria.

Additionally, celery contains a compound called apiuman, which can improve digestion and prevent stomach ulcers.

Lowers Blood Pressure

One of the most significant health benefits of celery is its ability to lower blood pressure. It contains compounds called phthalides, which can relax the muscles around the arteries and allow blood vessels to dilate. This effect can help reduce blood pressure and prevent heart disease.

Helps with Weight Loss

Lastly, celery is a low-calorie, high-fibre vegetable that can support weight loss. By adding celery to your meals, you can increase the volume of your meals without adding too many calories.

Additionally, the fibre in celery can help you feel fuller for longer, reducing the likelihood of overeating or snacking later on.

Did you know you can grow celery from scraps? Read more about growing vegetables from scrap! What a great way to make even more budget, healthy soups!

What is celeriac?

Celeriac may not be a common vegetable found in your kitchen, but it is worth trying. This root vegetable is also known as celery root or knob celery, and it is native to the Mediterranean region. Celeriac has a mild celery flavour with nutty undertones and a creamy texture, which makes it a versatile ingredient in various dishes.

Celeriac is a type of celery that is grown for its root instead of its stalks. It looks like a large, tan-coloured, gnarled ball with thin roots protruding from the bottom. Although it is an unattractive vegetable, celeriac has a pleasant, earthy flavour that adds depth to soups, stews, and salads.

Celeriac is low in calories, high in fibre, and loaded with nutrients. It has a high content of vitamin K, potassium, phosphorus, and vitamin C. Also, celeriac is a good source of dietary nitrates, which can lower blood pressure levels, and antioxidants that reduce inflammation and fight against chronic diseases.

Why soup is the perfect lunch

Soup is a great lunch because it is quick and easy and you can even enjoy it on the go. All you need is a flask and you can keep it hot and take it anywhere.

It is a popular lunch with lorry drivers, carers or people who do not work in one single place. If you have a job like that, this guide should also help you with more ideas.

celeriac infographic sharing the health benefits of celeriac.
Tomato soup in a dark bowl

Enjoying soup with a sandwich for lunch

Soup is a great way to bulk up a sandwich for lunch. It is a great way to have a warming meal that is filling too.

What about my healthy breakfast sandwich ideas?

Curry loaf sliced on a wooden board
Curry loaf

Adapting this celery soup recipe easily

There are a few simple adaptions you can make to this recipe. If you prefer to use onion instead of leek then this will not change the taste too much and makes it a little cheaper at the same time.

If you can’t get hold of celeriac then substituting this for potato works just as well.

pile of raw potatoes

Preparing in advance for this soup

If you want to make this soup even easier you could always prepare the ingredients in advance and freeze them in a suitable freezer bag so just tip them into the pan when you are ready to make it.

The reality is though this is a really easy recipe to make and if you have a soup maker that makes it even easier so why waste time preparing? Could you make celery soup in the soup maker this week?

Celery on a wooden table

Enjoying this recipe for weight loss

This recipe is usually considered to be syn-free on Slimming World as it uses speed vegetables and free foods but this is of course something you should always check yourself.

Sometimes people refer to it as a Slimming World speed soup because of this!

The soup is low in calories and as such fits well with most weight loss plans.

Other recipes you may enjoy

If you like soups then check out my healthy soups guide here including a tomato soup just like Heinz and a creamy mushroom soup.

Have you found this recipe whilst looking for lunch ideas? If so I have two posts that may help you. A 4-week lunch guide and a directory of healthy lunch ideas.

one pot chick pea curry
One Pot chickpea curry

What are the healthiest vegetables, and my favourites

How to grow vegetables from scraps

9 Ways to make vegetables for kids and fussy adults more fun and tasty

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celery soup

Creamy celeriac and celery soup – Unofficial Slimming World celery soup

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 1 review
  • Author: Jen Mellor
  • Prep Time: 10 minutes
  • Cook Time: 20 minutes
  • Total Time: 30 minutes
  • Yield: 4 Portions 1x
  • Category: Main Meal
  • Method: Stove top, hob
  • Cuisine: British
  • Diet: Low Calorie


A delicious celery soup which is easy to make and full of flavour. Perfect for winter lunches or a starter at a dinner party.



1 large leek, sliced

4 Celery sticks, chopped (save a few leaves for the garnish)

400g Celeriac, peeled and diced

2 bay leaves

1200ml vegetable stock

low-calorie cooking spray


Using a large lidded saucepan coat it well with low-calorie cooking spray and heat until hot.

Add leek, celery and celeriac and fry for 3-4 minutes until they begin to soften.

Add the bay leaves and stock then bring to the boil.

Cover with the lid and simmer for 20 minutes until vegetables are soft.

Remove bay leaves and blend using a hand blender.

Reheat the soup to warm it through and garnish with the celery leaves.


If you are on a  budget or prefer to use just celery why not swap the leek for onion or more celery?

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About Author

Hi, I’m Jen Mellor; I live in Nottingham, UK. and use my knowledge and experience in weight loss and confidence to help you become your own cheerleader and best friend. I am usually seen wearing colourful leggings and love to wear bright colours. Wear what you love, and be proud of your style and choices!

One Comment

  1. Celery reminds me of diets from the 80s. However, with the addition of the most underrated and ugliest vegetables, the celeriac, this was beautiful. I have even converted my husband who only eats soup from the Chinese takeaway!

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