Stacked Rainbow Cake

I’ve been known to bake the odd fondant decorated birthday cake, mostly for my own children but sometimes for family. I would in no way say I’m brilliant, or have the neatest best looking cake but I give it a go. I am a standard home baker (when I have time, or feel in the mood) who sometimes attempts a bit special. I was asked to create a stacked, polo shirt, rainbow cake by someone who had seen an image online. So I gave it a go.


A stacked cake like this needs a good sponge that won’t collapse under it’s own weight. Madeira cake is made with flour than a regular Victoria sponge so has a close-packed texture.

One lot of the mixture creates two layers for this cake so needs to be repeated three times if like me you only own two square tins.


(for a 9 inch square or a 10 inch round tin)

  • 350g (12oz) soft butter
  • 350g (12oz) caster sugar
  • 6 medium eggs
  • 350g (12oz) self raising flour
  • Zest and juice of 1 and 1/2 lemons
  • Colouring
  • Ready made fondant in corresponding colour
  • Homemade buttercream or ready made shop bought if preferred

Baking time if in a deep tin 1hour 20-30 minutes

Cake Method
  • Cream butter and sugar together
  • Add eggs one at a time with 1tbsp flour
  • Fold in the remaining flour with the zest and juice of the lemons

I used 9 inch square sandwich tins so at this point split the mixture in half in separate bowls to add colour. I use Wilton gel colours, they give a nice deep colour.

That also meant the baking time is less In my oven that was taken down to 30-40 minutes. I suggest checking after 20 minutes.

As I said earlier one batch makes two layers so I needed to repeat twice more so I ended up with six layers all different colours.

Cover the cake

After cakes are cooled. Dust your Worksop with cornflour and roll the fondant until it is large enough to fit over a layer of cake. It needs to fit over the top and sides. Cover the top and sides of one cake layer with buttercream and cover with fondant. Cut off any excess and repeat for each layer. Stack the layers as you go.

Decorate the top with a collar made from left over fondant, add buttons also made from fondant.







6 thoughts on “Stacked Rainbow Cake”

  1. Hello ,

    I saw your tweets and thought I will check your website. Have to say it looks very good!
    I’m also interested in this topic and have recently started my journey as young entrepreneur.

    I’m also looking for the ways on how to promote my website. I have tried AdSense and Facebok Ads, however it is getting very expensive. Was thinking about starting using analytics. Do you recommend it?
    Can you recommend something what works best for you?

    I also want to improve SEO of my website. Would appreciate, if you can have a quick look at my website and give me an advice what I should improve:
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    I have subscribed to your newsletter. 🙂

    Hope to hear from you soon.

    Maybe I will add link to your website on my website and you will add link to my website on your website? It will improve SEO of our websites, right? What do you think?

    Jan Zac

    1. Hi Jan
      I have only recently started blogging myself and am just getting used to using analytics, so haven’t really got enough experience with it yet to recommend.
      Your site looks good but I would add a little more info on your about me page.
      Regards Sara

  2. Hi Sara,

    I saw you tweeting about motherhood and I thought I’d check out your website. I love it! Looks like Sara has come a long way!

    Building a mailing list like you are is so important too, I think people would be interested in hearing what you to share.


    Good job with the Yoast plugin. SEO is so vital these days.

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    Check out for some more tips. Get in touch anytime if there’s anything I can help with.

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  3. Wow, that looks amazing! Making a rainbow cake has been on my bucket list for a couple of years now. I’m not a fan of fondant, plus I’ve never worked with it, so I don’t think mine will look anywhere as neat as yours. Thank you for the inspiration though! I might actually get to it this year 😀

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