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, of course always check your plan for advice.

Just Average Jen is an independent blog and in no way connected with any weight loss plan and no contributors have been trained by them or worked for them. It is the reader’s responsibility to check Slimming World syn values, WW points and any other allowances themselves as any given are approximate.

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.

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!

celeriac infographic

Making the best amazing soups quickly

You do not need a soup maker to make soup, though it does make it a little easier. I have a great soup maker.

If you like a smooth soup all you need is a stick blender, the cheap ones work just fine. You’ll also need a ladle and a flask if you want to take it to work.

Have you checked out my soup recipe guide? Soup is such an easy meal to take to work so why not put it on your meal plan?

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.

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?

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

I have a lot of weight loss guides and support if you want to exercise including if you have a condition like fibromyalgia.

Have a good look around and see how I can help you achieve your weight loss goals. Request my free resources to get you started too!

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celery soup

Creamy celeriac and celery soup – Unofficial Slimming World celery soup

  • 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?

Keywords: celeriac soup, celery soup, speed soup

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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!