Last Updated on February 27, 2021 by Fiona Maclean
Low-Calorie Celery Soup – 5:2 Diet Celery Soup Recipe
Skip to the Diet Celery Soup Recipe
I’m still doing the 5-2 diet, despite all apparent appearances to the contrary. Some weeks I find I don’t have 2 days when I can fast, but I try to balance that out on the weeks when I am less busy. And I am slowly losing weight. Luckily I love the taste of vegetables like celery and so I’ve been making a low-calorie celery soup for my diet.
Soup is my mainstay for lunch and part of that is because I am still convinced by some research shown on the BBC a few years ago. The theory is that food in ‘liquid’ format will help you stay feeling fuller for longer. Here’s a link to the original article
Celery soup is one of the most basic soup recipes. If you don’t add in the creme fraiche it’s only 35 calories or so for a bowlful! You can add extra vegetables – I’ve tried celery and spinach which is a lovely deep green mixture. In my recipe, I’ve used a small potato to thicken the mixture, but you could use a little rice (25g dried weight) or pearl barley if you prefer. My choice of potato is determined by flavour and texture. I don’t find rice adds much flavour. Pearl barley will add a slightly nutty taste and the consistency will be a little ‘gluier’ due to the starch levels. You could even add in cannellini beans if you want.

A low-calorie celery soup suitable for the 5:2 Diet.
Diet Celery soup will fill you up if you are following a weight loss diet
- 6 Stalks Celery chopped
- 1 Small Onion Finely diced
- 1 Small Potato maximum 100g, peeled and chopped into small chunks
- 1 Stock cube
- 900 ml Water
- 1 tablespoon Low Fat Creme Fraiche
- 3-4 shots 1-cal oil spray
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Spray a heavy duty pan with 1-cal spray. Add the onion and soften over a moderate heat till translucent.
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Add the celery and potato and cook for 2-3 minutes
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Add the water and stock and bring to a gentle boil. Cook for 15 -20 minutes till the celery and potato is soft.
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Blitz with a stick blender or process through a food processor.
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Check seasoning and add salt and pepper to taste. Serve with a teaspoon of creme fraiche stirred through each bowl.
Recipe Video
Serve this diet celery soup piping hot
Some people like their soup to have ‘bits’ in it. If that’s you, simply take out a large spoonful of chopped veg before you blitz the soup and return it to the pan once you are ready to serve. And, you can, of course, add in other veggies, though be warned if you put carrots in before you blitz the mixture the colour will be a bit dubious! The nutritional analysis is without the creme fraiche which will add 15 calories per teaspoon.
Anyway, this particular soup is one I made earlier (in true Blue Peter style). Tomorrow is another fast day and I have planned to make spicy tomato and lentil soup for lunch. I am expecting a veg and fruit box tomorrow so I don’t want to plan what I will eat in the evening though it will almost certainly be based on white fish or a chicken breast. One of the reasons the 5-2 diet and fast day planning works for me is because there’s a lot of flexibility in what and how you eat, so long as you keep to under 500 calories for a woman or under 600 for a man.
If you haven’t yet tried the 5-2 diet and would like to know more about it, please check out my 5-2 diet tips and leave a message on this post so I can link you to some of the excellent facebook support groups (all free). There are a whole collection of recipes on London-Unattached but do remember, I am not a recipe developer, these are simply the dishes I make for my own consumption.
Meanwhile, if you want to try for yourself – why not pin this post for later
Thanks ! I made this and its very delicious !
Looks delicious. Haven’t used celery in anything cooked for ages. Thank you for the nudge and the recipe.
This sounds really healthy and great for the diet, really trying to focus on healthy eating at the moment, so this is definitely one to try out with the extra time being at home at the moment, super fresh and really tasty
Love celery soup but have never made my own. I will now, as this one looks delicious 😋
I think your calorie calculation might be off? There are 22 calories in 4 stalks celery, 77 calories in 100g potato and that’s already over the 34calories you say this recipe is… not to mention the pile and crime friache which are both high in calories.
*oil not pile. Looks like a tasty recipe though 😃
It is a tasty recipe. I am not sure where you are from but 1cal oil is a special spray that squirts out a tiny amount of oil to line a pan. Worth looking out for if you are calorie counting!
The calculation is for a single portion – not for all of the soup! And, the oil is 4 calories (that’s what 1 cal oil shots do – they are simply to oil the pan so you can brown without ingredients sticking. As I’ve written the creme fraiche is optional. If you use half fat (I do) 1 teaspoon adds 15 calories…and that’s all you need.
Super tasty soup
Please help I also so busy dont like spicy food but want to do the 5 2 diet I love veg and fish .
A lot of my recipes are not spicy. This one, obviously. Also the Leek and Potato soup youll find here https://www.london-unattached.com/low-calorie-leek-potato-soup/. You can cook fish in foil or paper in the oven – so it is ultra healthy. Try this recipe https://www.london-unattached.com/5-2-diet-update-and-a-simple-way-with-fish/ or this one https://www.london-unattached.com/cod-with-shrimps-5-2-diet/
That looks gorgeous! What an amazing diet recipe – looks like real comfort food
What kind of stock cube do you use for celery soup please?
I use chicken (knorr) or a teaspoon of marigold stock powder which is vegetable.
Hi,
I’ve just made this soup and it’s very good. Instead of a stock cube I used umami paste for flavour. I have to say that it makes 2 (Janet) portions, rather than 4, which still leaves it under 100 calories so that’s just fine as I aim for an under 100 calorie lunch.
Great blog.
I guess it depends on how hungry you are – 900ml of water plus the water content of the celery should make a litre of soup – a good size bowl is around 250-300ml, but I can quite happily have two bowlfuls too at lunch time.
Really enjoying the soup ideas. I love that you include all the 5:2 details, & detailed calorie content. Best of all..they seem simple and quick to make and I dont needto buy a fancy gadget ! Will be making my own very soon. Thank you
is there a diet plan attached to this celery soup diet?
my celery soup is for the 5:2 diet, where you restrict your calories to under 600 for a man and 500 for a woman for 2 days a week, but the rest of the time eat what you want (within reason). You can find out a bit more from this post
I’ve just made this for my fast day lunch, really lovely thanks!
funnily enough I am having a fast day today too, eating celeriac and spinach soup with cumin (home made) which is yummy!
Your site always makes me hungry:-) You’ve also inspired me to quit ordering takeout every night of the week and put my teeny kitchen to use…excited to try this!
Thanks Jess
You inspired me to try this! Yesterday was my first fast day, and it was tough but not as bad as I thought. Haven’t overcompensated today either which I thought I might. Love your posts! x
could one add cilantro to that? or a swirl of yogurt or sour cream?
creme fraiche is sour cream of sorts. I’d probably add caraway rather than cilantro, but it’s all about personal taste!!!