Rainbow cake

Rainbow cake

  • 1
  • 2
  • 3
  • 4
  • 5
(169 ratings)

Prep: 2 hrs Cook: 1 hr

A challenge

Cuts into 18 slices
A stunning celebration cake of six or seven colourful layers and cream cheese frosting - an impressive showstopper.

Nutrition and extra info

  • Freeze un-iced sponges only

Nutrition: per slice

  • kcal601
  • fat29g
  • saturates18g
  • carbs73g
  • sugars47g
  • fibre2g
  • protein11g
  • salt0.6g

Ingredients

    You'll need 3 x these ingredients for six sponges

    • 125g butter, softened, plus a little extra for greasing
      Butter

      Butter

      butt-err

      Butter is a dairy product made from separating whole milk or cream into fat and…

    • 225g plain flour
    • 150g golden caster sugar
    • 3 medium eggs (very important to use the correct size)
    • 1 tsp baking powder
      Baking powder

      Baking powder

      bay-king pow-dah

      Baking powder is a raising agent that is commonly used in cake-making. It is made from an alkali…

    • pinch of salt
    • 1 tsp vanilla extract
    • edible food colouring - red, orange, yellow, green, blue and purple, plus optional pink (see below)

    For the icing

    • 1 tsp vanilla extract
    • 3 x 250g tubs cream cheese or mascarpone
    • 350g icing sugar

    Method

    1. Heat oven to 180C/160C fan/gas 4. Grease 2 x 20cm round sandwich tins and line the bases with baking parchment. Tip all the sponge ingredients, apart from the food colouring, into a mixing bowl, then beat with an electric whisk until smooth.

    2. Working quickly, weigh the mixture into another bowl to work out the total weight, then weigh exactly half the mixture back into the mixing bowl. Pick 2 of your colours and stir a little into each mix. Keep going until you are happy with the colour – the colour of the batter now will be very similar to the finished cake, so be brave! Scrape the different batters into the tins, trying to spread and smooth as much as possible – but try not to waste a drop of the batter – a rubber spatula will help you. Bake on the same oven shelf for 12 mins until a skewer poked into the middle comes out clean.

    3. Gently turn the cakes out onto a wire rack to cool. Wash the tins and bowls thoroughly, and start again from step 1 – this time using another 2 colours. Unless you’re making the optional pink layer, repeat one more time to get 6 sponges, all of different colours. Leave them all to cool.

    4. To make the icing, very briefly beat the vanilla and cream cheese or mascarpone with an electric whisk until smooth. Sift in the icing sugar and gently fold in with a spatula. Be careful – the more you work it, the runnier it will get, increasing the chance of splitting.

    5. Smear a little icing on your cake stand or plate – just a splodge to stick the first sponge. Start with the red, then spread with some icing right to the very edge. Repeat, sandwiching on top the orange, yellow, green, blue and finally purple sponges. Spread the remaining icing thickly all over the sides and top of the cake. For more tips and expert advice on how to create the perfect rainbow cake, check out our tips, below.

    You may also like

    Comments, questions and tips

    Sign in or create your My Good Food account to join the discussion.
    BakerBoi3000
    27th Jul, 2020
    1.05
    Unfortunately my cake did not come out as I wanted it to. The main issue with this recipe was the icing. It came out extremely runny and would not stick to the cake at all (when piper it looks like cheese worms).The finished result of the cake visually repulsed me. The colours mainly came out either very light or muddy and grey. If you were to make this cake give it a good amount of time in the oven as if you stick to the timings it will possibly come out inedible. After reading the reviews on this cake, I found myself agreeing with all the ones that were rated one star. The cake had great potential but I wouldn’t recommend wasting your ingredients there are much better recipes out there. (:
    Laura Sharp's picture
    Laura Sharp
    21st Jul, 2020
    5.05
    Turned out great for me! I hollowed our the centre to turn into a piñata cake. The colours showed through the icing a little bit we liked the look.
    lulu_grimes's picture
    lulu_grimes
    28th Jun, 2020
    There's a guide to making this cake pasted below, it answers many of the questions posted below the recipe. https://www.bbcgoodfood.com/howto/guide/how-make-our-rainbow-cake-frequently-asked-questions
    nikithomas
    18th Jun, 2020
    1.05
    This recipe is awful. DO NOT MAKE. A complete waste of ingredients. The cakes are rubbery and undercooked.
    Ryan Kan's picture
    Ryan Kan
    16th May, 2020
    1.05
    If I were left in a room with only this cake to eat and a match I would set it on fire. The actual sponges could be used for the discus event at the Olympics. Kids crying now, thanks.
    hoey02
    8th May, 2020
    The baking time should be 22-25 mins? Rather than 12 mins. Yet to try the icing. Cake seems ok so far.
    peakid
    2nd May, 2020
    1.05
    Expensive ingredients have gone to waste attempting this cake!! The cakes are lovely, but the icing is quite simply a disaster and not solid enough to ice a cake of this size? I would suggest using a recipe that also uses butter to help? The whole thing ended up in the bin - v disappointed! An expensive and time-consuming mistake!
    Andreas Nicolaides's picture
    Andreas Nicolaides
    20th Apr, 2020
    1.05
    This cake was terrible. This recipe needs to be removed for the greater good of humanity. Complete disaster is an understatement. The cake was so dense I hurt my back carrying it to the table.
    bridmcshane
    30th Mar, 2020
    5.05
    Made this for my litle girl's fifth birthday, even decorated it with unicorn horn, ears and mane. Made absolutely delicious, moist, flavoursome cake. I just followed the recipe as detailed for the cake but di
    Sophie Burgess's picture
    Sophie Burgess
    9th Dec, 2019
    3.05
    I made this cake for my sister's birthday. It took me around 3 hours probably because I made some errors. But it does need patience. The cake was a little flat and dense but it probably needs to be because it's so tall. In the end, I had to skip the red layer because the dye wasn't good enough. I recommend getting food coloring and not gel if you want that vibrant look. I also recommend getting a smoothing knife and a spinning table because it would have taken me twice as long to do the icing without those tools. Overall it was worth the try but I don't think I will be making this again.

    Pages

    gilb1981
    20th Jun, 2020
    Hi when we made our cake it looked great until we cut it and all of the layers ran into each other. You could still see the different colours and it looked good but it wasn’t as pristine as the picture on here. How do we stop the layers from mixing please? Thanks
    lulu_grimes's picture
    lulu_grimes
    28th Jun, 2020
    Getting a pristine cut can be tricky, make sure the cake icing has set and use a cleaned knife for each cut you make. I hope this helps. Lulu
    Aviryan
    25th Mar, 2020
    how long does this cake keep for and would it have to be stored in the fridge for freshness
    robinrvw
    11th Dec, 2017
    Can anyone tell me if I need to triple the quantities for the icing, or just for the sponge? Thanks
    goodfoodteam's picture
    goodfoodteam
    15th Dec, 2017
    Thanks for your question. You only need one quantity of the icing.
    Curious_Cam
    13th Nov, 2017
    Can anyone tell me how tall this cake is when complete? I don't know how big a container I should buy to take it to the party..... Any helping points gratefully received!
    goodfoodteam's picture
    goodfoodteam
    16th Nov, 2017
    Thanks for your question. We'd recommend a cake box with around 25cm height to allow for some clearance too.
    VanillaGrain
    12th Nov, 2017
    4.05
    Hello, can you please advise what to do if I need to make a bigger dose of the cake, lets say for a 33 cm baking tin? As I don't want to play with the egg proportions, I thought to just make your double dose for your 2x20 cm as a single dose for one of my 33 cm tins, or is that going to spoil the cake? I imagine it will just make it taller? Thank you!
    goodfoodteam's picture
    goodfoodteam
    16th Nov, 2017
    Thanks for your question. Unfortunately as all our recipes are triple tested to ensure they work with the proportions and ingredients given we cannot give specific advice on quantities and timings if you want to increase the recipe.
    raebarrow
    17th Sep, 2015
    I made this cake and it looked very impressive however I agree with many of the comments that the taste was not great. Not terrible but not great. Has anyone tried replacing the vanilla with lemon? I wonder whether this would make it taste any better?

    Pages

    RozThomas
    25th May, 2020
    I agree that this recipe makes the sponge way too dense and basically unedible. I ended up replacing the plain flour with self raising and that gave a much lighter sponge but still dense enough to not require any trimming. I also sieved the flour and added it last to add as much air in as possible.
    Liana Heywood's picture
    Liana Heywood
    1st Dec, 2019
    5.05
    I put a tsp of orange essence in the orange layer and a tsp of lemon essence in the yellow layer to give it a bit of extra taste. Also used jam in between some layers for more taste and buttercream on the others, which also made made colours!
    fk31
    11th Sep, 2019
    5.05
    Using gel food colouring is recommended as it gives a stronger colour and doesn't change the consistency of the mixture.
    pollyarty's picture
    pollyarty
    9th Aug, 2019
    I've made this successfully a few times, and I would suggest two things: Use concentrated food colouring so as not to make the cake mix runny, and secondly use buttercream to ice it - the cream cheese frosting is just too unpredictable!
    Ellen Grace Hills's picture
    Ellen Grace Hills
    6th May, 2018
    4.05
    do NOT open the OVEN while baking
    stia_616's picture
    stia_616
    28th Jun, 2013
    After reading the comments on here I still decided to make this for a birthday, and it's come out great . I did, however, make a few changes. I used a basic Victoria Sponge mix (found on this website also), making each layer with 100g selfraising flour, 100g butter, 100g caster sugar, 2 eggs, 1/2 tsp of baking powder and a tsp of vanilla essence. You will have to trim the top of the cakes slightly before layering, but it's a small price to pay for a better tasting cake. I used Dr Oetker food colour gel. The colours don't come out as bright in the picture here, but they still come out pretty well. They don't seem to leave the after taste that so many people have complained out, even though pretty much the whole tubes were used in each layer to achieve a bright colour. DO NOT use the Dr Oetker liquid food colour (in the bottles like the essence) as these WILL leave an after taste, especially the red one. I will admit, I cheated with the outside icing, buying it ready made as I'm not overly great with icing, but with cost it worked out the same to buy ready made cream cheese flavour icing as it was to make it from scratch. I made a simple butter icing to sandwich between the layers, which could also be used to cover the outside, to save the issue of runny icing. Using these steps this cake worked like a treat and went down very well with everyone who tried it, even with the kitchen staff of the restaurant we used I hope these tips help anyone else thinking of making this cake for a special occasion.
    Kerry Cooks
    23rd Aug, 2013
    Hello everyone! I have developed a very successful rainbow cake recipe on my blog - see all the positive reviews from people who've made it for their kids parties! http://kerrycooks.com/2012/04/rainbow-cake.html It's just a Victoria sponge mix, with gel colours, and baked in disposable tins. The frosting is cream cheese, and the whole thing is DELICIOUS! Hope you enjoy, if you have any questions, leave me a comment on my blog and I'll try and help.
    Want to receive regular food and recipe web notifications from us?