Syn Free Prawn Cocktail | Slimming World

An oldie but goodie! This Syn Free Prawn Cocktail is a Slimming World friendly version of the old favourite.

Syn Free Prawn Cocktail

For the full list of ingredients and comprehensive instructions, please see the recipe card at the end of this post. Before you scroll, there’s important stuff in the blurb 👍

This recipe will easily feed 2 people as a starter, or you could just have the whole thing as a light lunch or add some extra salad for a speedy main meal.

Syn Free Prawn Cocktail

Being a child of the 70s and 80s prawn cocktail was a regular starter on special occasions like Christmas, Easter and birthdays.

The secret’s in the sauce

The classic prawn cocktail or Marie Rose sauce is made up of mayonnaise, tomato and lemon juice. Normally the tomato part would be ketchup, which just adds to the syns.

Syn Free Prawn Cocktail

This seemed like a perfect recipe to use some of the Arla Cherry Tomato & Basil flavoured Quark, so we gave it a go. I think it turned out pretty well!

Another key ingredient for the sauce is acidity, so a bit of white wine vinegar and a squeeze of lemon juice does the trick. We’ve also added some finely chopped pickled gherkin to give the sauce a bit of texture and a bit more acidity.

Syn Free Prawn Cocktail


Finally, we need a tiny sprinkling of colour. For this you can use either paprika, or cayenne pepper, which gives the same effect but with a bit more of a kick.

Looking for some more Christmas Dinner ideas?

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Syn Free Prawn Cocktail

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Pre-Order Our Cookbook Now!

We’ve been squirrelling away doing squirelly things behind the scenes and can finally announce that our very first cookbook is available for pre-order!!

Pinch Of Nom Cookbook - preorder

The book will feature 100 recipes – around 80 of them BRAND NEW and not available anywhere else. Full colour photographs, hardback, a quality book that will stand up to frequent use!

Each recipe has been taste tested by twenty members of the Pinch of Nom community to ensure that they are amazing.

The book will be released on the 21st March 2019, and if you pre order now you won’t be charged until it’s released.

Check out our cookbook page for more information!

Syn Free Prawn Cocktail

Votes: 15
Rating: 4.13
Rate this recipe!


Prep Time

Cooking Time

portion 10 minutes 0 minutes



Slimming World 

123kcal Zero

Smart Points (Flex/Freestyle)



Per portion Per portion Per portion
Gluten Free icon
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  1. Mix all the ingredients (except the prawns, lettuce, lemon and parsley) together in a bowl. Squeeze in the juice from one of the lemon wedges. Check the seasoning and add a little more black pepper if needed
  2. Arrange the salad leaves on a plate or in a bowl
  3. Stir the prawns into the sauce, then arrange them neatly on each leaf. Spoon over the remaining sauce, then garnish with the cucumber, tomato and lemon wedges and serve

If you make this recipe, snap a pic and hashtag it #pinchofnom — We love to see your creations on InstagramFacebook, & Twitter!


We use a fan assisted oven for all of our recipes. Need help converting the temperature for your oven? 

Click here for our oven temperature conversion guide.

If making this recipe Gluten Free please make sure to check the ingredients that you’re using

Especially things such as; 

- Stock cubes
- Soy sauce - substitute with Tamari.
- Worcestershire sauce - substitute with Henderson’s Relish.
- Etc.


Syn values given are correct at time of writing but may not always be accurate.

This website is UNOFFICIAL and in NO WAY part of or representative of Slimming World. 

We aren’t trained by Slimming World nor authorised to give Slimming World advice. Any advice given here should not replace the advice of your Slimming World consultant.

Ideally, you should check with Slimming world for the most up to date Syn values using official resources such as; the Syns calculator, Syns Online on LifelineOnline or by calling the Syns Hotline on (0906) 851 8518.

Although attempts to provide accurate nutritional information, these figures should be considered estimates. Varying factors such as product types or brands purchased, natural fluctuations in fresh produce, and the way ingredients are processed change the effective nutritional information in any given recipe. Under no circumstances will be responsible for any loss or damage resulting for your reliance on nutritional information.

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As our recipes change often in accordance with syn value changes, we want to ensure that they're as accurate as possible at all times. 

If you use or re-create our recipes we kindly ask:

  • That you credit us by not only screenshot but linking to our original recipe post
  • You don't reproduce the recipe in full
    1. Hi Niki
      You’ll find the tomato and basil quark in Asda. If you can’t find it, you could possibly mix some tomato puree into plain quark or Fat Free natural yogurt.

  1. Thanks Jane

    I will try that as i don’t have an Asda, i live in Ireland so shopping limited, aldi,, tesco said they had it but can not find it, thanks for reply and answering x

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Slimming World Recipes
A blog started by 2 chefs on their Slimming World journey, evolving into an epic adventure shared by many!