Pastel rainbow cake in a jar

pastel rainbow cake in a jar

Pastel colours make me happy, eating cake makes me happy. I thought I’d combine these two things together and bake pastel rainbow cakes in a jar.

 I was wary about baking cakes in glass jars, I had visions of the jars exploding, leaving multicoloured cake mix all over the kitchen. However they turned out pretty good, well I think so anyways! Here’s how I made them. I used a boxed cake mix for the first time in a long time, as I read that certain cake mixes can brown easily and the colours can turn muddy. I didn’t want to take the risk. I spent quite a bit of money on the jars and gel food colouring, I wanted them to go right the first time, Luckily they did!

rainbow cake in a jar 2
What you will need:
Betty crocker vanilla cake mix
3 kilner half pint jars (Β£2.99 each from hobbycraft)
3 fresh eggs
60ml of vegetable oil
180ml of water
food colouring of your choice (I prefer the gels to liquid)
Preheat the oven to 170 degrees, fan ovens 160. Mix the cake mix, the three eggs, oil and water until it’s blended together. Separate the vanilla cake mix into five separate bowls. Add food colouring of your choice to each bowl. Now comes the messy part. Start scooping cake mix from each bowl and add a few dollops of each colour to the jars. I stacked the colours on top of each other, I didn’t want to mix or blend the cake mix once in the jar, as I didn’t want the colour to merge together and go muddy when baking. 
Fill each jar just about past half way, full of multicoloured cake mix. Before you place the jars in the oven, find a tray and fill it with half an inch of water. This creates a water bath for the jars and the cakes are less likely to brown whilst baking. Pop them in the oven for 30-40 minutes. You should have something like this.. Put a skewer to the bottom of the jar, if it comes out clean, the cakes are done!

rainbow cakes in a jar

Don’t they look pretty? I think the colours look so cool. Leave them to cool for around 20 minutes. Then it’s time to top them with a generous helping of butter cream frosting and sprinkles of your choice.
rainbow cake in a jar cake
 I think these cake in a jars would be perfect for birthday’s, special occasions or even as a little treat. If you put the lid back on the jar and place them in the fridge they would keep for around 2 days. The jars are easily washable and if you pop them in the dishwasher they come out like new. What do you think?


  1. October 1, 2013 / 11:59 am

    Your baking posts are just getting ridiculous now wifey, STOP MAKING ME HUNGRY WITH YOUR PRETTY TREATS. <3

  2. October 1, 2013 / 11:59 am

    These looks so good! I need to give it a go but my baking efforts never turn out too well x

  3. October 1, 2013 / 12:04 pm

    it looks so beautiful and unreal!

    xx Carina

  4. October 1, 2013 / 12:19 pm

    Becky these need to get in my belly now!

  5. October 1, 2013 / 12:49 pm

    Such a good idea, they look so pretty haha!

    zofia xo

  6. October 1, 2013 / 1:08 pm

    These look like they would be so hard to make but it looks so simple! They look amazing and soooo pretty! I hope they tasted as good as they look πŸ™‚ if only there was such a thing as click and taste… πŸ˜‰

  7. October 1, 2013 / 1:17 pm

    You are such a fantastic baker! These would be perfect for a children's party too Xx

    Olivia –

  8. October 1, 2013 / 1:31 pm

    Oh my these are fab. Thanks for sharing the recipe!


  9. October 1, 2013 / 1:36 pm

    These make me so happy. The pastel colors are so pretty! The only thing missing is more sprinkles πŸ™‚


  10. October 1, 2013 / 1:59 pm

    holy shit thats cool. I wanna make that so badly! I can imagine you being an amazing wedding cake/food person if that even is a thing.. I Dunno! but your good at cakes hahah xx

  11. October 1, 2013 / 2:01 pm

    Hi! What is this font what you use in your texts?

  12. October 1, 2013 / 2:51 pm

    These look amazing! Like just, WOW! x

  13. October 1, 2013 / 3:44 pm

    Oh my god this is too cute. I need this in my life like immediately. xo

  14. October 1, 2013 / 4:42 pm

    OH MY GOD, this looks SO PERFECT! Like a unicorn vomited in a jar, and then a cake apeared ! Like magic :DD

    Visit me at
    and find something interesting for you πŸ™‚

    Leave me a coment, I am looking for some new bloggs to follow πŸ˜‰

  15. October 1, 2013 / 4:43 pm

    aaaaah so gorgeous I can't wait to try this! how do your bakes always come out so perfect?! xx

  16. October 1, 2013 / 4:43 pm

    This is amazing, I've definitely never seen anything like that before. It looks too pretty to eat haha!

    – Bridie
    Oh So Bridie

  17. October 1, 2013 / 5:14 pm

    Your whole blog is so lovely,beautiful pictures

  18. October 1, 2013 / 5:18 pm

    your food posts always make me want to run into the kitchen and act like im deliah or something!xxxx

  19. October 1, 2013 / 5:19 pm

    awww these are soo cute! deffo guna give them a go, willbe cute for birthday presents too

  20. October 1, 2013 / 7:22 pm

    Ahhhh this looks AMAZING. You could mix it up and do chocolate/orange flavoured sponge for a Halloween treat πŸ™‚
    Rosie x | Every Word Handwritten

  21. October 1, 2013 / 8:08 pm

    These look absolutely incredible, I'm assuming you could make them in a mug too on ultimate lazy days! xx

  22. October 1, 2013 / 8:14 pm

    This is such an amazing idea! I really do LOVE your baking posts, even though they make me hungry. They'd be great because you can add any topping you want as well! I was wondering if you're going to do any Halloween-related baking posts? πŸ™‚

    Amy |

  23. October 1, 2013 / 8:27 pm

    They look so weird but so good at the same time. I think i might have to give this a shot, purely because I'm really curious about what they taste like. Thank you for sharing!

  24. October 1, 2013 / 10:27 pm

    this is so adorable! want to try this
    Lauren x

  25. October 1, 2013 / 11:40 pm

    Looks so pretty xx

  26. October 2, 2013 / 2:26 am

    this is amazing, probably one of the cutest baked goods i've seen in a loooong time. must find an occasion soon to bake these!! thanks for sharing πŸ™‚

    rachel x

  27. October 2, 2013 / 3:18 pm

    This is so cute! What a perfect gift for someone! Definitely going to do it for my friends birthday πŸ˜€

  28. October 2, 2013 / 5:32 pm

    Soooooo cute!!

  29. October 3, 2013 / 4:43 am

    Oh wow! That looks so beautifully delicious! At first I thought it was some type of play dough- but what a creative idea this is! πŸ™‚ xx

  30. October 6, 2013 / 5:54 pm

    Yumm that looks so pretty! I love pastel colours, what a perfect cake πŸ™‚

  31. July 7, 2015 / 11:04 am

    This looks really delicious! and the pictures you took are awesome, love this post!

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