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Chocolate Fudge Loaf Cake!

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A Thick, Fudgey and Delicious Chocolate Fudge Loaf Cake, topped with Luscious Chocolate Fudge Buttercream Frosting, and more! 

Loaf cakes… loaf cakes… I wish I’d known about your popularity before this past year, otherwise I would have done more recipes sooner. I honestly cannot get my head around how popular my loaf cake recipes have been! So, here is another.. 

My Terry’s Chocolate Orange Loaf Cake, and my Lemon Drizzle Loaf Cake have been super popular recently – and I love it! Although, I have had request after request for a really lovely, dense, fudgey and amazing chocolate fudge version, so here it is! 

I couldn’t resist this from the beginning because you all know how much I adore a chocolate fudge cake. My Chocolate Fudge Cake Traybake and the Cupcake version have always been popular, but nothing is as popular as the layer cake version! They all directly inspire this one, as they are all based around the same recipe!

As you may be aware, a classic and easy chocolate cake is based around five ingredients, usually. Flour, cocoa powder, eggs, butter and sugar – they make a chocolate Victoria sponge style cake, and I use that style of recipe all the time in my various bakes.. but this one is very very different. 

This sponge recipe uses ELEVEN ingredients, so quite different. Flour, cocoa powder, butter, eggs and sugar are still all there, but so is instant coffee, water, dark chocolate, baking powder, bicarbonate of soda, and buttermilk. This will sound a bit extreme, but trust me – it’s worth it. 

This cake recipe is very easy to make. You need to melt the dark chocolate and butter together until smooth – like you would for the base of a brownie mixture – and dissolve the coffee into the water.

YOU CAN’T TASTE THE COFFEE in the end results.. so PLEASE, trust me here, and use it. The coffee is designed to bring out a rich and delicious chocolate flavour. It’s 100% worth it!! 

Instead of self raising flour, you use plain flour, baking powder, and bicarbonate – they react with the other ingredients and create the texture you are after! You whisk the dry ingredients together with the sugar into a bowl with just a spatula or something – you really do not need or want to use an electric mixer here. 

You then whisk the eggs and buttermilk together – buttermilk is there to react with bicarbonate to create a rise in the cake – it’s very different to your regular use of self raising flour!

However, if you don’t want to buy a pot of buttermilk (which is found with the creams in the uk) you can make your own using whole milk (full-fat) and whisking in 1tbsp of lemon juice and leaving it to sit. It will look split almost, but that’s what you want!

You then combine the three different mixes together, with a whisk – stir as little as possible, pour into the tin and bake! As it’s a loaf cake, it will take a long time to bake – loaf cakes are similar to bundt cakes in that sense.

I use my favourite 2lb loaf tin as normal, but they can also vary in size (never understood why?!) – so if you think your tin is too full, make a few cupcakes with the spare mix. I usually fill my tin up to about 3/4 full, so by the time it rises, the tin is full! 

For the frosting, I used the same idea as the best ever frosting ever – evaporated milk being the key ingredient. The only thing is that yes you will have some evaporated milk leftover, but don’t worry, you can freeze it! 

With loaf cakes I just like to slather the frosting all over the top, or pipe, but it’s up to you – I often use some strawberries and some more chocolate goodies to decorate and it’s done, but that’s up to you – sometimes just chocolates are good! It’s a bit more effort with the ingredients, but otherwise, it’s such an easy cake to bake! I hope you love it! 

Chocolate Fudge Loaf Cake!

A Thick, Fudgey and Delicious Chocolate Fudge Loaf Cake, topped with Luscious Chocolate Fudge Buttercream Frosting, and more! 
4.88 from 8 votes
Print Pin Rate
Category: Cake
Type: Loaf Cake
Keyword: Chocolate
Prep Time: 30 minutes
Cook Time: 1 hour
Cooling Time: 4 hours
Total Time: 5 hours 30 minutes
Servings: 12 Slices
Author: Jane's Patisserie

Ingredients

The Cake

  • 175 g Dark Chocolate
  • 175 g Unsalted Butter
  • 2 tsps Instant Coffee
  • 100 ml Boiling Water
  • 135 g Plain Flour
  • 25 g Cocoa Powder
  • 1 tsp Baking Powder
  • 1/4 tsp Bicarbonate of Soda
  • 300 g Light Brown Sugar (or caster sugar)
  • 3 Medium Eggs
  • 75 ml Buttermilk

The Frosting

  • 125 g Unsalted Butter (room temp - not stork/spread)
  • 250 g Icing Sugar
  • 25 g Cocoa Powder
  • 1/2 tsp Vanilla (optional)
  • 50-75 ml Evaporated Milk

Decorations

  • Sprinkles
  • Chocolates

Instructions

For the Cake

  • Preheat your oven to 180C/160C Fan, and line a 2lb loaf tin!
  • In a microwave proof bowl, add the chocolate and butter and heat and mix until melted. I usually do 30 second bursts! 
  • Add the coffee granules to a mug, and pour over the boiling water and mix till smooth - add the coffee mix into the chocolate/butter and mix until smooth. 
  • In a separate bowl, add the flour, cocoa powder, baking powder, bicarbonate of soda and sugar to a large bowl and whisk till distributed. 
  • In another bowl, mix together the buttermilk and eggs. 
  • Add the three mixes together - I pour the chocolate/coffee mix and the egg/buttermilk mix into the dry ingredients and fold until smooth. You do not need to use a stand mixer as you may over-mix it.
  • Pour the mixture into the lined 2lb loaf tin - bake in the oven for 55-60 minutes, or until baked through!
  • Leave to cool fully once baked!

For the Frosting

  • Make sure your butter is at room temperature!
  • Beat the butter on it's own for a few minutes to soften!
  • Add in the icing sugar and cocoa powder 1/2 at a time, and beat until combined.
  • Add the vanilla, and then the evaporated milk a little at a time beating fully in-between each go!

Decoration!

  • Slather the frosting onto the top of the loaf cake, and then decorate how you want - chocolates and more!
  • Sprinkle on your favourite sprinkles and enjoy! 

Notes

  • This recipe is based on my Chocolate Fudge Cake and Chocolate Fudge Cupcakes with a few changes to suit the loaf cake!
  • I used this 2lb loaf tin as always!
  • The evaporated milk cannot be switched to condensed milk. 
  • PLEASE USE THE COFFEE - it just makes it taste more chocolatey, it doesn't taste of coffee. 
  • You can make your own buttermilk with 75ml full-fat milk, and 1tbsp of lemon juice. 
  • This cake will last for 3-4 days, at room temp. 

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.

About Author

Hiya! I'm Jane, and I adore baking, cooking and all things delicious. I'm also partial to homewares, lifestyle posts and more!

70 Comments

  • Hening Suryandari
    December 2, 2020 at 10:17 am

    Hi Jane,
    I made this recipe today, I love the taste of it, very moist and good but I have a problem here. The top of the cake was not dense enough and it’s middle top sank 😭 Wonder what’s wrong with this? Is it because the flour not sufficient enough in the dough? I did exactly as per your recipe. Please give me your opinion and advice as I love this cake 🍰

    Reply
    • Jane's Patisserie
      December 2, 2020 at 12:26 pm

      The recipe is correct for sure, sinking cakes often means it is under baked slightly, or the oven door was opened too early causing it to sink.

  • Paula
    November 30, 2020 at 2:23 pm

    Hi Jane, I’ve loads of Demerara cane sugar can this be used for brown sugar???
    Haven’t used it for baking as seems to be bigger crystals.

    Reply
    • Jane's Patisserie
      December 1, 2020 at 10:34 am

      It can be a bit grainy I won’t lie, but if you have any form of blender you can try and blend the sugar to make the crystals finer x

  • Chandni
    November 26, 2020 at 10:24 pm

    Hey Jane,
    Is there any substitute for egg in this recipe??

    Reply
    • Jane's Patisserie
      November 27, 2020 at 11:23 am

      I have not made this one eggless I’m afraid so I don’t know exactly what would work or not but its worth looking into egg replacements if you have done it before!

  • Irma
    November 25, 2020 at 10:12 pm

    Hi Jane, could I use normal baking spread/stork for the cake instead of butter? Would it change the texture of the cake?
    Many thanks x

    Reply
    • Jane's Patisserie
      November 26, 2020 at 3:37 pm

      For the cake yes, but not the frosting! X

  • Maria
    November 18, 2020 at 8:12 pm

    4 stars
    I used 70% dark chocolate and a premium cocoa powder and it was almost too chocolatey for me. Could I use a 50-60% dark chocolate instead? Also do you reckon I could use half butter and half oil to get a more springy finish?

    Reply
    • Jane's Patisserie
      November 19, 2020 at 1:13 pm

      I always recommend using the 70% cocoa content personally, but you could always use a lighter cocoa powder (the risk with the lower percentage is how it bakes) and I’m afraid I have only ever made this with the butter x

  • Louise
    November 18, 2020 at 8:26 am

    5 stars
    I gave up making chocolate cakes some time ago because I was fed up that they were always too dry. After being pestered by my cake loving nephew I gave this recipe a try. All I can say is wow! It’s very simple to make and the final result was AMAZING. Th moistest, most tastiest chocolate cake recipe I’ve every followed. My partner, and ex-chef, said “this is the best cake I’ve ever eaten.” So that I you Jane for restoring my faith in chocolate cakes.

    Reply
  • Charlotte Johnson
    November 17, 2020 at 8:23 pm

    5 stars
    One of the best of Jane’s recipe in my opinion! The frosting is so smooth and chocolatey, it was a hit with every in the family!

    Reply
  • Mia
    November 9, 2020 at 6:38 am

    5 stars
    Made this today and honestly it was the yummiest thing I’ve ever tasted!! Your recipes are fool proof babe I can’t thank you enough for this yummy recipe.

    Reply
  • Maria
    November 4, 2020 at 6:42 pm

    Hi! Can I use self raising flour instead? And if yes what I have to change ? Thank you

    Reply
    • Jane's Patisserie
      November 5, 2020 at 9:40 am

      The raising agents are slightly different in this cake (so the texture will be different if you use self raising – it would probably also over flow the tin so ideally you would still use plain! x

  • Rob
    October 27, 2020 at 8:04 pm

    Struggled with this one Jane, it didn’t rise at all in the middle….did it twice today with same result. ??
    Any ideas why ?

    Reply
    • Jane's Patisserie
      October 30, 2020 at 9:42 am

      This can happen if the oven door is opened too early – it will cause it to completely collapse on itself. Or, the raising agents weren’t measured correctly, or it was over mixed! x

  • RB
    October 27, 2020 at 1:43 pm

    Hi Jane
    Instead of using dark chocolate any chance I can use cocoa powder instead?….if yes, what is the quantity of the cocoa powder i need to use and any changes i need to make?
    Thanks

    Reply
    • Jane's Patisserie
      October 27, 2020 at 4:28 pm

      Unfortunately not for this – you need the dark chocolate in the base recipe x

  • Sarah Dyer
    October 1, 2020 at 9:43 am

    Hi Jane, I’m going to try this lovely recipe at the weekend but only have oat milk, coconut milk or lactose free. Would that work for the buttermilk?

    Reply
    • Jane's Patisserie
      October 1, 2020 at 1:50 pm

      I’m afraid I have only made homemade buttermilk using whole milk (which is typically what you should do) – I’ve read that soya milk is the best alternative if using dairy free, but I assume it work the same with the others as long as they are full-fat x

  • Screenname 1994
    September 22, 2020 at 9:57 pm

    Hi Jane,

    I’m so excited to make this cake but I have one question.

    How come adding the coffee water mixture to the melted chocolate will not ruin the melted chocolate i.e. why won’t it seize up? Or is it because it’s is being added after the chocolate is melted?

    Reply
    • Jane's Patisserie
      September 23, 2020 at 8:00 am

      The chocolate is mixed with butter, and the amount of water is quite considerable – you can even make chocolate sauce with just chocolate and water. Water is dangerous for chocolate in small amounts (even one drop of water can ruin chocolate) but like this there are absolutely no issues!

  • yvonne mellett
    September 16, 2020 at 8:15 am

    5 stars
    Gorgeous, gorgeous, gorgeous. Could it be made in two 1lb tins for those with eating restrictions?

    Reply
    • Jane's Patisserie
      September 16, 2020 at 8:47 am

      I’m not sure what you mean by eating restrictions? But it can be – does reduce baking time but I am unsure how long. x

  • Emma
    September 2, 2020 at 2:36 pm

    HI,

    If i have left over mixture and make cupcakes, how long do the cupcakes need to be in the oven? The same amount of time or less?

    Thanks 🙂

    Reply
    • Jane's Patisserie
      September 2, 2020 at 3:10 pm

      The cupcakes will take about 20-22 minutes! x

  • Lucy Barr
    August 30, 2020 at 9:12 pm

    5 stars
    Delicious cake! Day 2 microwaved for 40secs and served with ice cream. Oh yes! Another 5 star recipe.

    Reply
  • Hannah
    August 25, 2020 at 6:14 pm

    5 stars
    Hiya, I bake using your recipes every week and they are such a hit! But I can’t seem to get the frosting thick and sturdy, it’s always runny. Any tips? X

    Reply
    • Jane's Patisserie
      August 25, 2020 at 9:08 pm

      It is a softer frosting – but what butter are you using? It needs to be a block butter and no spread of any sort x

  • yvonne atkinson
    August 23, 2020 at 8:29 pm

    5 stars
    hi jayne i have made your choc fudge loaf twice and twice it has sunk in the middle i have followed the recipe as you say to and still sunk a little but tastes amazing any idea why this is happening cooked it for 1 hour 10 min

    Reply
    • Jane's Patisserie
      August 23, 2020 at 9:07 pm

      Did you make any ingredient swaps? Such as dark for milk chocolate etc? And how did you mix it? Jane

  • Andrea
    August 19, 2020 at 5:12 am

    What are the measurements of a 2 LB loaf tin? I’m in Australia and recipes usually stipulate the length and width (or diameter) of the tins required

    Reply
    • Jane's Patisserie
      August 19, 2020 at 12:04 pm

      Typically ours do too, just not loaf tins or bundt tins – the one I use is linked on the post, which I believe has the exact measurements on!

  • Em
    August 17, 2020 at 4:16 pm

    Hey Jane! This looks like such a delicious and amazing recipe. Was wondering though, does this taste the same as your chocolate traybake? As fancy making a traybake version as my old 2lb tin is too small and waiting for the one you use to come in the post. Or are they still slightly different? Thanks!

    Reply
    • Jane's Patisserie
      August 17, 2020 at 8:04 pm

      Hey! Yes its the same sponge style, just slightly different measurements is all to fit the tins! xx

  • Emma Mcintosh
    August 17, 2020 at 2:13 pm

    Hi Jane,
    50 minutes into cooking I notice my mix is leaking out over the tray quite badly. I use the same size tray as you, any ideas? 🙂 Thanks!

    Reply
    • Jane's Patisserie
      August 17, 2020 at 8:07 pm

      Hiya – so as mentioned on the post, 2lb loaf tins can vary in sizing, so it probably just means that even though yours is called it, it wasn’t the same size as mine. Sorry! x

  • Priya
    August 15, 2020 at 12:21 pm

    Hi Jane
    Mines currently in the over (45 min in) and still quite wobbly so will check in 10-15.
    Also, I must have put too much of the mixture in as it’s over spilled 😭 I didn’t see the part where you put in the write up about filling 3/4 way. I’m annoyed with myself as was going to stop then thought…nope, the recipe/method doesn’t state this so pour it all in! 🤦🏽‍♀️
    I hope it still turns out ok 😔
    Keep your fingers crossed for me x

    Reply
    • Emma
      August 15, 2020 at 5:16 pm

      Was just about to post that mines been in an hour and still wet inside, and no where near cooked. Not sure what’s gone wrong.
      Did yours fix itself?

    • Jane's Patisserie
      August 15, 2020 at 8:09 pm

      Yes it did for her! As long as you used the correct ingredients and didn’t over mix, it can just sometimes take longer – cover with foil and continue to bake x

    • Priya
      August 15, 2020 at 7:16 pm

      Ok! It came out fine and tastes INCREDIBLE!!!! Thank you 😊

    • Neha
      October 2, 2020 at 3:20 pm

      Hello …the recipe looks awesome …want to really try …what is evaporated milk ..I doubt I can get that here …if not what else can I use instead it can I make that at home

  • Amanda
    August 14, 2020 at 5:03 pm

    Hi – could I swap for GF plain flour?

    Reply
    • Jane's Patisserie
      August 14, 2020 at 8:50 pm

      I haven’t tried it – but I think with some xantham gum to help bind the mixture it should be okay!

  • Amy
    August 10, 2020 at 6:41 am

    This recipe looks awesome – can’t wait to try it! In the commentary above the recipe you suggest using strawberries in the decoration – these are featured in the recipe or on the photos, is that correct? Thanks

    Reply
    • Jane's Patisserie
      August 10, 2020 at 9:40 am

      Sorry that was my mistake, it’s just meant as an example of something you can use!

  • Lisa
    August 9, 2020 at 10:31 pm

    75 ml of milk and a tblsp of lemon juice? I thought it was more like 1 tblsp for every 240 ml. Are you sure?

    Reply
    • Jane's Patisserie
      August 10, 2020 at 9:41 am

      I’ve done it with 1tbsp and it’s fine, but you can do less if you prefer..

  • Meme
    August 9, 2020 at 11:57 am

    I read that’s you mentioned extra batter can be used for cupcakes, but if I’m looking for really fudge-y chocolate cupcakes, would you recommend this recipe? Not looking for light and airy chocolate cupcakes which most cupcake recipes I’ve tried have been. I want something rich.

    Thank you !

    Reply
    • Jane's Patisserie
      August 9, 2020 at 12:22 pm

      Have a look at the chocolate fudge cupcake recipe on my blog x

  • Marjan
    August 9, 2020 at 12:14 am

    Hi Jane, love your amazing life work! Please would you be able to come up with a chocolate cake recipe that uses oil instead of butter? (As oil gives a more soft, moist and bubbly texture and beautiful shine). I’ve seen so many recipes that use oil however when ever I make it (always 85g Cocoa recipes I’ve used I’m just not getting that really rich chocolatey taste and I would like to add more cocoa but I’m worried about it perhaps drying the cake

    Reply
    • Jane's Patisserie
      August 9, 2020 at 12:26 pm

      This one really is the best recipe, but it does still use butter – I’d recommend trying it!

  • Amy
    August 8, 2020 at 7:06 pm

    Hi Jane. To make the butter milk, is it ok to use malt vinegar instead of lemon juice? Thanks!

    Reply
    • Jane's Patisserie
      August 8, 2020 at 8:24 pm

      Yes that should be okay – generally I just prefer the lemon method!

  • Jess
    August 8, 2020 at 6:13 pm

    Would I need to change anything if I wanted to use espresso instead of instant coffee? Thanks!

    Reply
    • Jane's Patisserie
      August 8, 2020 at 8:26 pm

      Ideally you want the same volume of liquid, so I would use at least two shots of espresso (it depends what style you have!) x

  • Sarah
    August 8, 2020 at 3:59 pm

    Hi does it have to be dark chocolate? Or if I use dark chocolate does it taste very dark chocolaty if you get what I mean lol

    Reply
    • Jane's Patisserie
      August 8, 2020 at 8:27 pm

      Yes, it MUST be dark chocolate. You need the cocoa content to get the correct results.. it doesn’t taste ‘dark’ x

  • Daneka
    August 8, 2020 at 2:04 pm

    I’ve just put mine in the oven! Can’t wait to try it later. Thank you for the recipe! 🙂

    Reply
  • Ciaran
    August 8, 2020 at 10:13 am

    Hi Jane! I hope you’re well!
    My cake mixture seemed quite runny when I put it into the oven. Is this ok? Thanks! 😊

    Reply
    • Jane's Patisserie
      August 8, 2020 at 11:18 am

      Hey! Yes it is meant to be! X

    • Ciaran
      August 8, 2020 at 12:23 pm

      Thank you so much Jane! I just finished making it. You weren’t wrong when you said it’s the best chocolate frosting ever! I have posted my picture on Instagram and tagged you. Thank you so much!

  • Zoe
    August 8, 2020 at 9:51 am

    Hi, what are the chocolate balls on top of the cake?

    Reply
  • Susan M
    August 8, 2020 at 9:43 am

    This looks amazing! Can’t wait to make it, have just done the Sticky Toffee Loaf and loved it.

    Reply
  • Julie Heller
    August 8, 2020 at 8:41 am

    I’ve done the cupcakes and the large cake absolutely delicious so moist , it’s my families favourite!

    Reply
    • Jane's Patisserie
      August 8, 2020 at 9:46 am

      Ahh yay! It’s just the best chocolate cake isn’t it!!

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