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A classic bake in loaf cake form… what more could you want?! A coffee and walnut studded sponge with a smooth coffee buttercream frosting. YUM.

Coffee

I adore coffee now, but usually iced I won’t lie. I didn’t drink coffee until a couple of years ago, and now I adore all iced coffee, and I’m gradually learning to love hot coffee as well. However, coffee cake?! That’s always been yummy.

I know so many people who are not coffee drinkers who would happily have a slice of coffee cake as there is just something about it that is a little bit different. It’s a lovely warming flavour almost and I just adore it.

In case anyone was wondering, an iced white mocha is my favourite. I am coming round to a coconut milk mocha though? Both are great drinks to have with a side of coffee and walnut cake, however. 

For this bake, I used instant coffee. I always have it lying around for bakes as it’s easier, but you can swap it to 1-2 tsps coffee extract, or even use a double espresso shot from a coffee machine. 

Coffee bakes

I have posted a few coffee based bakes on my blog now, but definitely nowhere near enough. I adore my coffee and walnut cupcakes which are basically a mini version of this loaf cake, as well as my coffee cake which is a chunk of a cake. Trust me, it’s huge.

I wanted to do a coffee loaf cake as it’s been one of the most highly requested bakes EVER for something that is so so simple and classic. It’s a cake that I think so many people will eat at a bakery or when they’re out for coffee and cake.

Coffee is also a brilliant addition to a chocolate fudge cake because it brings out the chocolate flavour in the chocolate cake – it’s a wonderful ingredient that adds a delicious depth. 

Loaf cakes

Loaf cakes are one of my favourite cakes to make. They are easy to pour into the correct tin, easier to decorate as they are so much simpler, and they always look like fun. They can be slightly annoying to photograph, but that’s no worries. 

One slight annoyance with the actual baking process of a loaf cake however is that NO 2lb loaf tin is the same size. I know, this may sound ridiculous… but I recently bought 12 different loaf cake tins so that I could compare, and they were all different. Some, even though named the same size, could fit half of the volume of cake mix. 

Because it’s so inconsistent, I always test my recipes using this 2lb loaf tin to make it easier. However, when making these cakes, make sure not to fill past 2/3 full so it doesn’t overflow. Any spare cake mix, if your tin is smaller, can be used to make cupcakes (they take 20 minutes to bake at 160ºc). 

Some of my favourite loaf cakes I’ve made using this tin are my white chocolate and raspberry loaf cake, my chocolate orange loaf cake and my baileys chocolate fudge loaf cake – but this one? This coffee walnut loaf cake is definitely up there with one of my new favourites. 

The cake

  • Butter – for the butter, you can use a baking spread or a block butter – both work well for the cake.  
  • Sugar – because this is a coffee cake, I use brown sugar as it brings out the coffee flavour even more
  • Flour – self raising flour, as it’s for a cake. You can use plain flour of the same weight though, and mix in 2 level tsps baking powder per 150g of plain flour
  • Eggs – I always use medium eggs, so I used four eggs for this. 
  • Coffee – I used a good quality instant coffee, but as mentioned above, you can use other coffee. 
  • Walnuts – I use chopped walnuts so it’s smaller pieces spread throughout the cake mix 

Decoration

The decoration is so easy when it comes to a loaf cake. I tend to always use my favourite piping tip, and swirl the buttercream in a rope like format across the cake in lines. You can of course just dollop the frosting on and spread, or pipe it in a different way. 

  • Butter – you must use block butter for the frosting, and not a spread.
  • Sugar – I use icing sugar, of course. 
  • Coffee – as with the cake, I used instant coffee dissolved in water, but you can use others. 
  • Walnuts – I kept some as halves, and some chopped 
  • Sprinkles – because why not?!

Tips and tricks 

  • This bake will last for 4+ days at room temperature
  • You can freeze this bake for 3+ months
  • I use this 2lb loaf tin – if yours is smaller, only fill the tin 2/3 full.  
  • You can swap it to 1-2 tsps coffee extract, or even use a double espresso shot from a coffee machine. 
  • I use this piping tip
  • I use these piping bags 

Coffee Walnut Loaf Cake

A classic bake in loaf cake form… what more could you want?! A coffee and walnut studded sponge with a smooth coffee buttercream frosting. YUM.
Print Pin Rate
Category: Cake
Type: Loaf Cake
Keyword: Coffee, Walnut
Prep Time: 30 minutes
Cook Time: 1 hour
Cooling & Decorating: 2 hours
Total Time: 3 hours 30 minutes
Servings: 10 slices
Author: Jane's Patisserie

Ingredients

Cakes

  • 225 g unsalted butter/baking spread
  • 225 g light brown soft sugar
  • 225 g self raising flour
  • 4 medium eggs
  • 2 tsps instant coffee (dissolved in 2tsps boiling water)
  • 125 g walnuts (chopped)

Buttercream

  • 150 g unsalted butter
  • 300 g icing sugar
  • 2 tsps instant coffee (dissolved in 2tsps boiling water)

Decoration

  • walnuts (chopped)
  • sprinkles

Instructions

Cake

  • Preheat your oven to 180ºc/160ºc fan and line a 2lb loaf tin
  • Beat together the unsalted butter and sugar until light and creamy
  • Add in the flour and eggs and beat again. Add the dissolved coffee and mix
  • Stir through the chopped walnuts and pour into a lined tin. Bake the cake for 55-65 minutes
  • Once baked, leave to cool fully.

Buttercream

  • Beat the unsalted butter on its own to loosen
  • Add the icing sugar and beat together
  • Add the dissolved coffee and mix

Decoration

  • Add the buttercreams to a piping bag and decorate
  • Add some chopped walnuts and sprinkles and ENJOY!

Notes

  • This bake will last for 4+ days at room temperature
  • You can freeze this bake for 3+ months
  • I use this 2lb loaf tin - if yours is smaller, only fill the tin 2/3 full.  
  • You can swap it to 1-2 tsps coffee extract, or even use a double espresso shot from a coffee machine. 
  • I use this piping tip
  • I use these piping bags 

 

ENJOY!

Find my other recipes on my Recipes Page!

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J x

© Jane’s Patisserie. All images & content are copyright protected. Do not use my images without prior permission. If you want to republish this recipe, please re-write the recipe in your own words and credit me, or link back to this post for the recipe.

43 Comments

  1. Niamh on March 15, 2025 at 10:44 pm

    What other topping could you make if you don’t like buttercream?

  2. Joanne Mullett on February 24, 2025 at 10:13 am

    Can I make this minus the coffee without the need to make any adjustments to the rest of the recipe?

  3. Lyn hosking on November 16, 2024 at 10:03 am

    Can I use salted butter

  4. Caitlin on October 24, 2024 at 9:28 pm

    Hi can I use this recipe in a 20cm round cake tin instead?

  5. Sabrina on October 9, 2024 at 12:25 pm

    How would I do this in a 2 layer 8inch cake please

  6. Maddie Smith on October 4, 2024 at 8:39 pm

    I made this cake step by step but it has come out verrrry oily, do you know what I done wrong or is it supposed to be like this x

    • Jane's Patisserie on November 22, 2024 at 3:30 pm

      This may be the butter you used, which one was it? It is a moist cake so it may also just be moist!



  7. Sandra Teasdale on August 25, 2024 at 6:43 pm

    5 stars
    It’s a really nice moist cake with plenty of yummy Buttercream. Will make this again & again!

  8. Gina on August 14, 2024 at 4:14 pm

    Would your coffee recipes work using DECAF?

  9. McD Coffee Lover on August 5, 2024 at 11:19 pm

    5 stars
    This coffee and walnut loaf cake sounds delicious! I love how coffee enhances the flavor. Can’t wait to try it!

  10. Christabel on July 29, 2024 at 10:07 pm

    5 stars
    Turned out perfectly. Lots of nuts with a mixture of finely and coarsely chopped.. When slightly warmed even better (take off the buttercream icing first). I also added the caramelised 1/2 walnuts on the top for a bit of crunch. But the coffee has to expresso not instant; instant isn’t strong enough.

    • Deva on August 28, 2024 at 12:09 pm

      Great recipe but definitely makes more mix than will fit a 2lb loaf tin so have some cupcake cases ready. I always double the quantity of coffee powder which gives a really well defined flavour.



  11. Mary McDonald on June 7, 2024 at 4:56 am

    Hi I want to make this cake as a tray bake what would the quantities be? I love your recipes Jane thank you xx

  12. Lucy on June 4, 2024 at 11:31 am

    It was delicious but quite dense. Any suggestions on what I did wrong? I measured everything out

    • Jane's Patisserie on June 20, 2024 at 10:09 am

      Often this is purely for the baking time not being enough, or the mixture was over mixed! x



    • Karen on October 1, 2024 at 3:56 am

      5 stars
      This cake is so easy to make. The texture, the combination of walnuts, coffee flavour (I used strong espresso coffee) and icing, all marries together deliciously and lasts well. My family n friends absolutely loved it. I have made it a quite a few times now and it always turns out perfect! Thank you so much Jane for sharing your recipe 🥳



  13. Phil. on May 29, 2024 at 12:08 am

    5 stars
    I followed recipe to letter (assumed tsps indicates teaspoon?). My only negative is the coffee is not very evident. I used 2xtspn granulated nescafe gold blend in 2x tspn boiling water. It smelt strong but doesn’t taste hardly at all. I was going to get 2 x espressos from café but worried the extra liquid would affect the recipe. There is no liquid in recipe at all to adjust. I was tempted to mix the coffee with butter but decided to follow the recipe.

    • Jane's Patisserie on June 20, 2024 at 9:39 am

      Yes, teaspoons. It likely is that your coffee just isn’t strong enough when baked – a strong 1 shot espresso should be fine x



  14. James on May 27, 2024 at 10:19 pm

    I only have large eggs, would using 3 large eggs instead of 4 medium work?

  15. Lesley on May 12, 2024 at 11:50 am

    4 stars
    Lovely cake but I would suggest adding more coffee

  16. Wendy on April 26, 2024 at 2:21 pm

    I’m going to experiment with pecan nuts & Nespresso pecan coffee.

  17. Grace on April 11, 2024 at 6:25 pm

    Could you make this the same way but take out the walnuts?

  18. Georgia on April 7, 2024 at 11:46 am

    How would these be measurements be for 2 layer 6 inch cake? Would I need more?

  19. Hannah on March 25, 2024 at 7:37 pm

    Can I add dates to this recipe without changing anything else?

  20. Hannah on March 19, 2024 at 7:18 pm

    Can you add dates without having to change any other ingredients or cooking times?

  21. Claire on March 17, 2024 at 1:38 pm

    Would you do 1 double shot espresso from a coffee machine split over the cake and buttercream or a double shot for each? I’m worried it would be too much liquid, or would you take 2tsps from the double shot in place of the instant coffee? Thanks in advance! 😍

    • Jane's Patisserie on March 18, 2024 at 1:17 pm

      For the cake a double shot is fine, for the frosting its best to slowly add it as you mix to prevent adding too much liquid! x



  22. Billie-Jo Batten on March 13, 2024 at 10:34 am

    5 stars
    I’m not the best at baking cakes but this turned out lovely ☺️

  23. Louise Sharp on March 9, 2024 at 9:20 pm

    Can u do this without using the coffee as I love walnuts but hate coffee

    • Chris on March 17, 2024 at 10:09 am

      It’s a coffee and walnut cake the hints in the name.



    • Katie on October 27, 2024 at 8:52 pm

      4 stars
      The flavour is lovely but my cake was quite dense. I mixed it until it was just combined and baked for 55 mins. I can only think my oven runs hot so should have taken it out earlier, but never mind!



    • Jane's Patisserie on November 5, 2024 at 4:14 pm

      Dense cakes can often mean they are still slightly underbaked, or you used cold eggs in the cake mix! x



  24. Sue on March 4, 2024 at 12:52 pm

    5 stars
    Love this cake!!!!! As I love all your cakes :). Can you freeze it with the buttercream on?

  25. Suzanne on February 29, 2024 at 8:11 am

    Hi wanting to make this for first time , what is best coffee to use please

  26. Nicola Jordan on February 24, 2024 at 5:48 pm

    5 stars
    Absolutely delicious and I love the fact there’s nuts in every slice unlike other recipes!

  27. Christiane on January 6, 2024 at 7:56 pm

    All proper basic ingredients . Looks yummy.
    Must try very soon!

    • Aimee on February 12, 2024 at 10:22 pm

      Could you use this recipe and bake it in two round sandwich tins instead of a loaf tin?



  28. Zoe on January 5, 2024 at 10:16 pm

    Is there anything to substitute the walnuts for. Its a family favourite but no on elijes walnuts

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