How to make the Best Ever Rainbow Cake | Cupcake Jemma

There isn’t a person on earth who isn’t a fan of rainbows, right? Right?? Well, if there is then they must be very sad and lonely. But you and I know that rainbows are magical and brilliant and what better way to give the rainbow the respect it deserves than to embody it in cake form.

This one's quite a lengthy watch, so put the kettle on, put your feet up and prepare for some top tips for baking and decorating the perfect Rainbow Cake. This video is going to knock your socks off!

RECIPE

For the cake -
9 tbsp whole milk
1 ½ tsp vanilla extract
Various colour pastes (red, orange, yellow, green, blue & purple)
750g soft unsalted butter
750g caster sugar
9 large free-range eggs
750g sifted self-raising flour
Butter & flour for preparing the cake tins

For the buttercream -
400g soft unsalted butter
900g sifted icing sugar
5-6 tbs whole milk
½ tsp vanilla extract

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MY INSTAGRAM: @cupcakejemma
CAKESTAGRAM: @crumbsanddoilies

[Anna-oeue]

4 years later, and I still watch this occasionally when I am sad.

[CupcakeJemma]

Hi Guys. A lot of you are concerned about the scraps! Firstly I will say that in order to get to best part of your sponge cake, and create a nice level base, you do need to cut some off the top. The middle of the cake dips in slightly so on the side it looks like I'm taking away half the cake but in the middle it's more like a quarter and THAT is where the softest, fluffiest part of the cake is. What you choose to do with the scraps is up to YOU! In my kitchen, they either get roughly iced up for staff treats, taken home by the team, or made in to other things such as cake pops and cake truffles and mini cakes. Sometimes there is nothing to do with them and they must go in the bin and thats the way it is when you're operating a busy kitchen. We like to keep wastage to a minimum but it IS inevitable. At home, when you make this cake, you can do what you like. They will freeze well in an airtight container or ziplock bag so that if you aren't sure what to do with them you can keep them on hold until you get some inspiration! I hope this helps. x

[sophialab]

Am i the only one who could watch baking videos forever??

[kayzward]

It's been 7 years since this video came out and I still swear by this recipe!!! I'm so happy I found it! YOU HAVE TO MAKE THIS, IT'S LITERALLY PERFECT

[christiegurganus]

if you had a TV show I'd watch it every day

[mwaaai]

I love this baking community, everyone is so nice to each other ♡

[PhoebePhiloPhiliac]

To the people who are dying about how much cake is cut off: you absolutely need to do so to get that incredibly clean and precise rainbow color effect. Plus all those other bits she probably ate as a cook's treat. She probably used those scraps as a rainbow trifle!

[simonebattaglia]

Ok it’s been 5 years yet it never ceases to satisfy me

[sabinabegum]

I have made this cake twice and it's the BEST recipe ever! I find a lot of rainbow cakes being ultra sweet esp the icing but this one was perfect. Jemma is my go-to for hands down, the easiest recipe to follow. My kitchen is always left in a mess due to the 6 sets of everything :) I also used regular semi-skimmed milk and just regular baking butter from Aldi. I am about to make my third cake for my niece's 1st birthday.

[itsame]

it took me 6 hours😂 IT WAS WORTH IT🎉😂 (My Friends, They've Loooved It So Much) Tysm!

[myself]

I'm watching this in 2019 and it is amazing to me how much more comfortable in front of the camera she is now

[wendymarsh]

My 22yr old daughter asked for a rainbow cake. I followed your receipe, just made it slightly small(not as many layers 🤭. Everybody commented on how good it was. I have used a recipe to make my mum's 80th birthday cake, im no expert but it turned out fabulous. I have used many of your receipes and customised them to my sizes.
Thank you so much for sharing your expertise with us.

[aperson]

I made this cake yesterday for my daughter's 1st birthday. It went down so well! Thanks so much for the great tutorial - the step by step instructions were really helpful 😀

[nickietigg]

im soooo glad I've found you on here!!! i have dyslexia and find reading recipes a nightmare!! demo's are a must. I've bought a mixer and everything i need to make some fab cakes for the macmillian coffee morning. with your help im confident i can do it!!

[fatimasultana]

this is so beautiful! I just want to say THANK YOU for taking your time and really showing us every step of the process and giving us so many helpful tips along the way! You rock!

[michaelfairbairn]

Using the scraps for decorative crumbles on top: genius.

[softballluver]

FOR EVERYONE IN AMERICA, HERE ARE THE INGREDIENTS: 
9 tbsp whole milk
1 1/2 tsp vanilla extract
various color pastes
3 cups + 2 tbsp softened unsalted butter
3 cups + 2 tbsp granulated sugar (american caster sugar)
9 large eggs (free range or farm fresh are best!)
3 cups + 2 tbsp regular flour
1 tbsp baking powder
butter + flour for cake pans
for the frosting:
26 tbsp soft unsalted butter, or 1 2/3 cup
3 3/4 cup sifted icing sugar
5-6 tbsp whole milk
1/2 tsp vanilla extract
what other recipes should i convert?

[fatima-tcwc]

Took me about 3 hours to make but it was so worth it! Tasted incredible, stayed fresh for 3 days and looked beautiful! I also followed Jemmas video on how to cover your cake with sprinkles, added some colour and texture to the side of my cake - big hit!!

[bLLeMc]

I don't know how many times I've watched this vid! One of my absolute favourites!

[dilipratnam]

I am a 14 year old baking fanatic- my grandmas cousin from overseas knows I love making cakes and sent this video!!! I love all the tiny tips and tricks here like cutting the sides off the cakes, adding colour to the milk etc. it’s a great video!!! Thank you