Now if you are looking for a new family favourite, then you have to check out this Slimming World Tuna and Sweetcorn Fish Cakes, especially as they are syn free, packed full of flavour, goodness and absolutely filling. They’re super easy to make and take hardly any time at all which is the best part!

I have to say if you are a fan of tuna, then these Slimming World Syn Free Tuna and Sweetcorn Fish Cakes have to be right up your street. My partner isn’t a fan of fish but as these use tuna they get eaten every time and I know a lot of other people who are in similar situations.

I’m sure that these Slimming World Tuna and Sweetcorn Fish Cakes will be a huge hit with the whole family. What makes these even better is that they can be prepared in advance and cooked as and when you are ready.

These Slimming World fishcakes will fit almost any budget and it just shows that great food doesn’t always have to be expensive, it can be budget friendly and super tasty!

Slimming world fish cakes recipe
slimming world fish cakes

Tuna Fish Cakes or Tuna Fish Patties?

When I was making these I struggled with what they should be called, are they fish cakes or are they fish patties? If you think of a traditional fishcake, then these are very different as there are no breadcrumbs anywhere near these. On the other hand, are the patties? I thought burgers were patties, so could these also be called patty? Anyway, I will let you make up your mind about what they should be called.

It doesn’t matter what you call them, these slimming world fish cakes will still taste amazing, look amazing and hopefully remain syn free for as long as we can enjoy them!

How Many Syns? – 0 Syns

So these slimming world fish cakes don’t only look and taste amazing, they’re also syn free! That means you can enjoy them and not feel guilty about it. I will say though that doesn’t mean you should have 5 or 6 in one sitting otherwise you might feel a little unwell after!

This slimming world fish cake recipe was made with chopped peppers, not cooked or anything and they go really well with a dinner. I also made my special air fryer chips which are also syn free, so you can have yourself a syn free dinner!!

Equipment That I Used

So I wouldn’t be able to make these slimming world fish cakes without the help from some kitchen equipment that’s for sure! To begin with, the mash has to be really smooth otherwise the mixture won’t stick together and it will be lumpy so a potato ricer is key! Check out my affiliate links below for inspiration!

Slimming world Fish Cakes Recipe

If you liked this slimming world fish cakes recipe do let me know! I’ve made them a few times now, they’re not a for sure thing in my home though. One recipe that is a favourite in my home is this slimming world chicken noodles recipe and we make it at least 5 times a month because it’s that yummy!

You can add ingredients into this slimming world tuna fish cakes recipe if you want, sweetcorn gets added sometimes and if you have a healthy extra spare you can add a little cheese as well. This recipe makes 4/5 fish cakes depending on size, I use the cookie cutters so I can get the same size for each, which also means the same cooking time for each.

Slimming World Tuna and Sweetcorn Fish Cakes (Syn Free) Recipe Card

Slimming world fish cakes recipe

Slimming World Tuna and Sweetcorn Fish Cakes (Syn Free)

Now fishcakes can difficult to get right, most of them are just flavoured potato, well this recipe is certainly different, packed full of fish, these Slimming World Tuna and Sweetcorn Fish Cakes (Syn Free) should be on your dinner list.
5 from 1 vote
Prep Time 5 minutes
Cook Time 20 minutes
Total Time 25 minutes
Course Dinner, Fish
Cuisine Dinner, Slimming World
Servings 4 People
Calories 266 kcal


  • Potato Ricer
  • Mixing Bowl
  • Silicone Spatula
  • Baking Tray
  • Silicone Baking Mat
  • Cookie Cutter


  • 2 Tins Tuna in spring water drained
  • 3 Medium Potatoes
  • 1 Tin Sweetcorn drained
  • 4 tbsp Herbs chives or coriander or parsley or a mixture of the 3.
  • 1 Medium Egg lightly beaten
  • Black Pepper
  • Frylight


  • Preheat the oven to 180°C/160°C Fan/Gas 4.
  • Peel, chop and then boil the potatoes for 15 minutes, then drain and and mash the up.
  • Add the sweetcorn, tuna, herbs and eggs and add a little pepper.
  • Combine all of the ingredients and divide into 8 portions and shape into a flat patty and place on a baking tray lined with parchment paper. I use a cookie cutter to get the shape.
  • Spray with Frylight and place in the oven for 15-20 minutes until lightly golden.
  • Serve with a Slimming World chips, or a lovely salad.


*Prices correct as of September 2021
*This is Syn Free per serving
Tuna (in Springwater) 2 tins 344 kcal £1.32
Potatoes 500 g 510 kcal £0.24
Egg 1 72 kcal £0.15
Coriander (Fresh) 4 tbsp 4 kcal £0.10
Sweetcorn 1 tin 132 kcal £0.37
TOTAL   1062 kcal £2.18
PER SERVING   266kcal £0.55
Keyword Dinner, Fish, Slimming World, Tuna

Don’t forget to share this slimming world fish cake recipe with your friends and family so they can enjoy it as well! Add it to Pinterest as well so that everyone can find it and lose weight. Just don’t tell Julie in slimming group, she’s had slimmer of the month enough times now right?!

If you do make these slimming world fish cakes, let me know on Instagram by uploading your own picture or join my Facebook group to chat with other foodies!

Slimming world fish cakes
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