How Many Syns In Tesco's Egg Custard Tarts & Low Syn Alternatives

Updated on 
17 October, 2021

Can I Eat Egg Custard Tarts On Slimming World?

Now and then it's nice to indulge in a custard tart, but these treats are high in syns and have to be counted from your daily Slimming World allowance if you want to lose weight. 

In a Tesco egg custard tart you are looking at 12 syns for one which nearly totals your daily syn allowance for the day so should be eaten in moderation.

In our article below we will cover why egg custard tarts are so high in syns, some syn value of egg tarts from different brands and alternatives. We will also give a short recipe on how to make your own Slimming World egg custard tart to satisfy your cravings.

Why Are Egg Custard Tarts So High In Syns?

Egg custards coming in at 12 syns per tart can be pretty shocking, but this is because of the high sugar and fat content from the custard filling, as well as the heavy pastry on the outside which also uses butter, making it a high calorie treat. 

This doesn't mean that you can't have the odd tart occasionally however, you just have to be careful how many you have and that your allowance allows.

Egg Custard Syn Values 

Nearly all egg custard tarts have a similar syn value, but it's worth knowing the syn value per pack from each brand just in case.

  • M&S 2 Egg Custard Tarts 2 per pack - 12 syns per tart.
  • Tesco Fresh Egg Custard Tarts 2 Pack - 12 syns per tart. 
  • Sainsbury's Egg Custard Tarts 2x81g - 11 syns per tart. 
  • Aldi Bluebird Bakery Egg Custard Tarts 340g - 12 syns a tart. 

Low Syn Alternatives To Egg Custard Tarts 

Since egg custard tarts are quite high in syns, you will be pleased to know that are some other low syn pastry style desserts you can have as an alternative. 

We will list some low syn alternatives below. 

  • Aldi Specially Selected Cherry & Custard Tart 475g - 9 syns per portion. 
  • Bonne Maman Red Fruit Tarte 2 x 75g - 7.5 syns per tart. 
  • Mr Kipling Signature Apple, Pear & Custard Tarts 6 per pack - 10.5 syns per tart. 
  • Delicato Mazarin Almond Tart 4 x 37g - 8 syns per tart. 
  • M&S Lemon Tart 400g - 11 syns per slice. 
  • Tesco Lemon Curd Tarts 6 Pack - 6.5 syns per tart. 
  • Tesco Portuguese Tarts 4 Pack 208G - 7 syns per tart.

Slimming World Friendly Egg Custard Tart 

If you are a lover of egg custard tarts then do not worry, you can still enjoy them by making your low syn version at home with a few ingredients, this recipe is 3 syns per serving and the whole tart serves 4 people.

We will list the details below. 


  • 4 eggs. 
  • 600ml of skimmed milk
  • 1 tsp of vanilla extract. 
  • Juice of an orange. 
  • Pinch of cinnamon. 
  • 200g of mixed berries. 


  • Step one - Preheat your oven to gas mark 4 then whisk the eggs until they start to become frothy.
  • Step two - In a saucepan start to slowly heat your milk, vanilla and sweetener until boiling, you can put half of your cinnamon in at this point too then pour it into your eggs at a slow speed continuously mixing.  
  • Step three - Now strain your mixture to get rid of any lumps and add in the orange juice with the zest, divide the mixture into 4 different dishes and bake for around an hour in total.
  • Step four - Allow them to cool down for around 4 hours then sprinkle the cinnamon on top and serve with berries.

Final Words 

To conclude, Tesco egg custard tarts have 12 syns for each one, making them a high syn snack which should be had occasionally, there are many other low snack dessert type snacks to have too if you want to satisfy your sweet craving or you can try making your own SW friendly custard tart above for 3 syns a tart.

Jennifer is a certified nutritionist and weight loss coach with a Master's in Nutrition from Cambridge. With over 10 years experience, she shares healthy recipes and science-backed slimming tips on SheCooksSheEats to help people reach their wellness goals. Jennifer stays up-to-date by regularly attending conferences and continuing her nutrition education. She aims to provide research-backed advice to inspire balanced, happy living.
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