Easy Weekend Weetabix Cake (Fatless and High-Fibre)

Weetabix Cake - Fat Free & High Fibre (and delicious!)


This fat-free, easy-to-make Weetabix cake sounds too good to be true doesn’t it? Well, I promise you it isn’t. It doesn’t even require a lot of mixing–it’s that easy. Really, Mr. Weetabix does the hard work here, acting as a superb glue for the rest of the ingredients (so you need no butter), he adds a delicious taste and a high dose of fiber too.

No cake is ever going to be classed as a health food, but if you’re going to have a cake then at least make a healthier version. A slice of this will fit in your lunchbox just perfectly.

Ingredients for weetabix cakeStuff You’ll Need

  • 2 Weetabix
  • 125g (1 cup) sultanas or raisins
  • 200g (1 cup) brown sugar (Any type)
  • 250ml (1 cup) milk
  • 1 egg
  • 150g (1 cup) self raising flour
  • 1 tsp mixed spice
  • 2lb loaf tin

Let’s Get Going

weetabixsoak1. Put the Weetabix, dried fruit, sugar, and milk into a bowl. Break up the Weetabix a little, with a spoon, and stir it all together. Cover the bowl with cling film and leave it in the fridge for at least 3 hours or overnight.




mix all ingredients together2. Preheat the oven to 180c, 350f, gas 4. Put the other ingredients into the bowl with your Weetabix mix and stir it until everything is mixed in.




Add weetabix cake mix to tin3. Pour the mix into a greased loaf tin, and cook for 50 minutes.





And that’s it–just three steps! You’ve made your fat free, high fibre cake. Now all that’s left to do is enjoy it. 

Finished weetabix cakeYou can easily make 2 of these and freeze one for later–Weetabix cake freezes really well.


What’s the Big Deal with Fibre?

intestine diagramSo, you probably hear a lot about why fibre is so good for us, but you don’t really know why. Well, probably most grown-ups don’t either! To understand better, let’s take a look at how our bodies process the food we eat.

Once food reaches our stomach (tummy) it next gets sent to the small intestine. The small intestine processes our food, and anything that can be absorbed into our bloodstream gets taken care of here–such as sugar, for example. Anything that our body can’t absorb then gets sent on to the large intestine. The large intestine processes what is left of the food that our body can’t use, and  it turns it into… well… poop.

Fibre travels through both the small intestine and the large intestine, making sure they stay clean–this helps to keep our insides nice and healthy. If you eat a good amount of fibre, then when it’s time to go to the toilet, fibre makes it easier for you to… well… poop.

So, as you can see, fibre is a really important thing to have in our diets.


Where is the Fibre in Weetabix Cake?

In our Weetabix cake, the Weetabix itself has a good amount of fibre, and the dried fruit (sultanas, raisins, etc.) is a good source of fibre too. So these foods aren’t only yummy they are good for our bodies too!

If you enjoyed the Weetabix cake you made then please share this post and let your family and friends know.


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  1. The egg is not mentioned when adding ingredients

  2. Didn’t say when to add egg

  3. Irene Jack says:

    It would be very useful if you could kindly mention how many syns the cake comes to. I make the dried fruit alone to be 17.5 syns not to mention the flour, sugar etc. I know the cake is cut into slices and portions but it really would help to know this before cooking. The cake looks lovely, I must say.

    • Wendy Finn says:

      Hi Irene, thank you for your comments. Yes it is a lovely cake. Unfortunately I will not be adding information like syns to any of my recipes. There are a few reasons for this but the main one is that obviously this is a cooking website for kids, who don’t, and shouldn’t, care about diets and syns. This recipe wasn’t intended to ever be a ‘diet’ recipe, although obviously the beauty of making things yourself is that you have a list of the ingredients and relevant quantities to be able to work out syns, calories, points or whatever you wish to. Many thanks, and I hope you do try the cake at some point.

  4. Fatless and high in fibre but why loads of sugar ? Surely this is not healthy

    • Wendy Finn says:

      I do not advertise this as healthy; it’s a cake! I specify quite clearly that the fibre keeps your insides healthy, and nothing more. There isn’t loads of sugar, there is of course sugar in it because… it’s a cake! LOL

  5. Love the cake, first time I made it, I told no one about the weetabix until after they had finished it. I got loads of compliments on it.. just made it a second time, hope it’s as good. Thankyou for the recipe xx

    • Wendy Finn says:

      Brilliant, thanks Mandy. I love making the big reveal to people that it’s got Weetabix in it 😄

      • I’ve made it again, but this time I halved the sugar…….just for myself really as I’ve had weight loss surgery so not supposed to have sugar, anyhow, I honestly can’t tell that I’ve halved the sugar, it’s still just as delicious. Thankyou so much for sharing your recipe xx

        Oh also, my partner gave a slice to a work colleague, and he’s asked me to make him one but without the fruit! So, do I just make it the same but leave the fruit out or do I need to increase something else?

        • Wendy Finn says:

          I know someone who regularly reduces the sugar in recipes by a third as a matter of course so that’s interesting to know that it works in this recipe. Thank you. I’ve honestly never tried it without the fruit but I imagine it will still turn out the same. The fruit does add some sweetness though. Let me know how you get on.

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