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This classic carrot cake is an exceptionally moist, two-layer sponge made with oil instead of butter, packed with freshly grated carrots, vibrant orange zest, and warm spices. Prep takes 20 minutes, it bakes in 30 to 35 minutes, and it is topped with an ultra-fluffy vanilla buttercream.

A finished carrot cake with buttercream and decorative carrots

Notes from The Patisserie

Unlike traditional sponges that rely on creamed butter, a spectacular carrot cake relies entirely on sunflower oil. Because oil remains a liquid at room temperature, it guarantees a crumb that is significantly softer, denser, and inherently more moisture-rich than a butter-based cake. It also means your cake will stay incredibly fresh and moist for days without drying out.

To elevate the sponge further, we add the finely grated zest of an entire orange. The natural citrus oils cut beautifully through the richness of the sunflower oil, brightening up the overall flavour profile and complementing the sweetness of the carrots.

A slice of carrot cake with buttercream on a plate with a fork

Balancing the spice blend

The hallmark of a great carrot cake is its warmth. For this recipe, I use a specific trio of ground spices: mixed spice, cinnamon, and ground ginger.

  • Cinnamon brings a familiar, comforting sweetness.
  • Mixed Spice adds complexity with its notes of nutmeg, allspice, and cloves.
  • Ground Ginger delivers a very subtle, sharp background kick that prevents the cake from tasting one-dimensional.

When mixing the dry ingredients into your wet carrot base, the golden rule is to avoid over mixing. Stir the batter until the flour is just incorporated, over working the gluten at this stage will turn your wonderfully soft, rustic cake into something tough and heavy.

A top down shot of a finished whole carrot cake with buttercream and carrot decorations

Ingredients and swaps

Carrot cake is a highly customisable canvas, and you can easily adapt the textures to suit your personal preferences:

  • Walnuts – I love walnuts in a carrot cake but these can be swapped for pecans or any other crunchy nut you fancy
  • Sunflower oil – this is essential for creating the moist texture carrot cake is known for.
  • Eggs – I use medium eggs
  • Sugar – light brown sugar provides a rich caramel taste that runs through and complements the other spices
  • Carrots – finely grated or you will end up with lumps of carrot baked throughout the cake rather that the sweet flavour
  • Raisins – these are optional but add delightful, chewy pockets of concentrated sweetness throughout the sponge. You can swap them for chopped sultanas, dried cranberries, or omit them entirely.
  • Orange zest – the sharp citrus helps to cut through the sweet cake, it makes such a difference
  • Flour – I use a good quality self raising flour
  • Bicarbonate of soda – this helps with the rise but also the texture of your sponge
  • Mixed spice – a delicious addition to the cake as it adds depth of flavour throughout
  • Ground ginger – a teaspoon is enough to taste the spicy kick
  • Ground cinnamon – a teaspoon of cinnamon provides that sweet sharpness to your bake
A whole carrot cake with vanilla buttercream and decorative carrots

Vanilla buttercream vs cream cheese frosting

I decorate mine with either cream cheese frosting or vanilla buttercream – as this one was made as a request from my friend, we went with the buttercream! The vanilla from the buttercream gives it a delightful sweetness that I think is a cakey marriage made in heaven!

Although you can obviously use cream cheese frosting, I like to switch it up now and again. The secret to making this buttercream exceptionally light and cloud-like is the addition of a small amount of boiling water at the very end of mixing. Whipping the buttercream on a high speed with that touch of hot water slightly softens the butter fats, yielding an incredibly silky texture that glides effortlessly onto the delicate sponges.

A slice being removed from a whole carrot cake with vanilla buttercream

FAQs

Do I have to use sunflower oil, or can I use vegetable oil?

You can use vegetable oil as a direct 1:1 swap. Any neutral-flavoured liquid oil works perfectly. Avoid using olive oil or extra virgin olive oil, as their strong, savoury flavours will overpower the delicate spices and orange zest.

Why did my carrot cake sink in the middle?

This typically happens for two reasons: either the bicarbonate of soda was measured too generously (causing the cake to rise too rapidly and then collapse), or the oven door was opened before the internal structure of the sponge had fully set.

Can I bake this recipe as a single traybake or loaf cake?

Yes, this batter adapts beautifully. For a rectangular traybake (9×13 inch), bake at the same temperature for roughly 25 to 30 minutes. For a loaf cake, it will need a deeper bake time of around 50 to 60 minutes.

Should I grate the carrots finely or coarsely?

Always use the fine side of your box grater for carrot cake. Finely grated carrots release the perfect amount of moisture and completely soften into the batter during baking. If you use a coarse grate, you will likely end up with crunchy, distinct orange strands in your finished cake, which ruins the silky texture of the crumb.

A plate of carrot cake with buttercream half eaten

Carrot Cake Recipe

Delicious and moist carrot cake, decorated with a lovely light vanilla buttercream and nuts!
Print Pin Rate
Category: Cake
Type: Cake
Keyword: Carrot
Prep Time: 20 minutes
Cook Time: 35 minutes
Cooling and Decorating Time: 1 hour 30 minutes
Total Time: 2 hours 25 minutes
Servings: 12 slices
Author: Jane’s Patisserie

Ingredients

Cake

  • 225 ml sunflower oil
  • 5 medium eggs
  • 275 g light brown sugar
  • 300 g grated carrots
  • 100 g raisins optional
  • zest of 1 orange
  • 275 g self raising flour
  • 1.5 tsp bicarbonate of soda
  • 2 tsp mixed spice
  • 1 tsp ground ginger
  • 1 tsp ground cinnamon
  • 100 g walnuts/chopped pecans optional

Buttercream/Decoration

  • 250 g unsalted butter room temperature
  • 500 g icing sugar
  • 1 tsp vanilla extract
  • 1 – 3 tbsp boiling water
  • chopped nuts
  • carrot shapes/sprinkles

Instructions

  • Preheat your oven to 180ºc / 160ºc Fan
  • Grease & line two 8" cake tins with parchment paper
  • Pour the sunflower oil and eggs into a large bowl and add the light brown sugar
  • Mix lightly and combine
  • Add the grated carrots and raisins (if using) and orange zest and fold through to combine
  • Add the self raising flour, bicarbonate of soda, mixed spice, ginger, and cinnamon and mix again – try not to over mix!
  • Once combined, fold through the nuts (if using) and pour into the prepared tins
  • Bake the cakes in the oven for 30-35 minutes until cooked through (test with a cake tester, should be clean!)
  • Leave to cool in the tin

Buttercream

  • Beat the unsalted butter for a couple of minutes so its very smooth in a stand mixer with the paddle attachment
  • Gradually add the icing sugar until all combined and beat on a high speed for a couple of minutes
  • Once mixed, add the vanilla extract and mix again
  • Whilst mixing, gradually add the boiling water until you reach your desired consistency
  • Beat for another 5 minutes so its super light and fluffy
  • Place one of your sponges onto the plate you're using, spread half of the buttercream on top, add the other sponge, and spread the rest of the buttercream on
  • Decorate to your desire

Notes

  • This cake will last 4 days covered at room temperature
A close up shot of a full carrot cake with vanilla buttercream and decorative carrots

Storage and freezing

Because of the exceptional moisture content provided by the fresh carrots and sunflower oil, this cake keeps brilliantly and will stay wonderfully soft and flavourful for up to four days when kept covered at room temperature in an airtight cake tin or a dedicated cake box. It is best not to store this cake in the fridge, as the cold air can cause the sponge to dry out prematurely.

If you want to get ahead with your baking, the un-iced sponge layers can be wrapped tightly in a double layer of cling film and frozen for up to three months; simply defrost them fully at room temperature before assembling and decorating with your fresh vanilla buttercream.

Related recipes

I posted my recipe for my carrot & walnut cupcakes a while ago and they’ve been a massive hit – they’re a big reader favourite and an alternative to the classic carrot cake as they’re so light and flavoursome and yum yum yum.

If you prefer cream cheese frosting then you can always try my carrot loaf cake, it is DELICIOUS! I quite like that cream cheese frosting doesn’t necessarily go with every cake so when you do have it, it’s not boring and always tastes amazing.

240 Comments

  1. Disnr on September 9, 2024 at 9:03 pm

    5 stars
    Made this for the 1st time for a work colleague it went in a day ! I changed the buttercream from vanilla extract to orange extract and orange juice instead of boiling water and worked really well. My daughter now wants one this weekend 😁

  2. Anna on August 31, 2024 at 10:16 pm

    5 stars
    Made this today as the first time I’ve made carrot cake. Came out amazingly, absolutely delicious!

  3. Janet on August 4, 2024 at 10:28 pm

    I made this with dark sugar and white , added 50 grams extra of carrots , and maybe 15 mls of oil extra, it turn out the best one I’ve made so far ,it’s more moist and very light!

  4. Julie on April 12, 2024 at 3:17 pm

    Hi Jane, I recently made your carrot cake cupcakes for my Granddaughters birthday, which all the family loved your recipe, my daughter would like a carrot cake for her wedding, and I wondered how much I would need to upscale this recipe for a 12inch cake please?

    • Lucy on July 5, 2024 at 4:11 pm

      I would make 4 x the amount for a 12 inch (two layers)



  5. Christina on January 25, 2024 at 6:37 am

    5 stars
    Hi Jane, I’ve used your receipe previously and it was absolutely amazing.

    I’m making a carrot cake for my neighbour but doesn’t want raisins in it, I know the recipe says can leave them out but advised to have the nuts. Do I need to substitute the raisins with anything else? She loves the cake moist apparently so want to get it spot on! Many thanks 🙂

  6. Lisa Woollett on October 17, 2023 at 8:54 am

    5 stars
    I’m thinking of making my daughters wedding cake next summer. I tried this recipe as well as some of your others at the weekend as a tester and it was very well received. It’s super yummy and very light. Thank you Jane. Just thinking about quantities now. Do I just double/triple up? X 😊

  7. Abigail Baker on October 16, 2023 at 12:28 pm

    How would I convert this recipe to a three tier 6 inch cake? 😊

    • Zoe on April 9, 2024 at 1:51 pm

      I always use the same quantities but divide into 3×6” tins and they come out perfect 🥰



  8. Kirsty on September 28, 2023 at 8:04 pm

    Hello!

    I haven’t made this recipe yet but I’m exited to!

    Do I have to use orange in the recipe? I’m not a fan of carrot cake with orange flavour in it. Also, if it is okay to leave it out do I need to replace it with anything for moisture content?

    Thank you!

    • Jane's Patisserie on October 28, 2023 at 11:55 am

      Hiya! You can just leave it out x



  9. Jessica on August 4, 2023 at 10:58 am

    5 stars
    Hi Jane,

    Need an answer quickly if possible. Is it possible to freeze this decorated with vanilla buttercream a week in advance? Asking as doing it as part of a wedding cake.

    Thanks!

  10. Joanna on May 21, 2023 at 11:05 pm

    Hi Jane, how tall will this cake turn out? Thank you xx

  11. Jen on May 3, 2023 at 4:34 pm

    I accidentally us d plain flour instead. Cake looks fine. Will this be ok ?????
    Thanks

    • Jane's Patisserie on May 5, 2023 at 11:42 am

      It’s hard to tell – it may just be more dense than normal but still taste nice!



  12. Trey on April 18, 2023 at 10:48 pm

    Hi, please can someone help me to convert this recipe to a 3 layer 10 inch please? Thank you so much

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