From Nigel's Kitchen Table
Coffee & Walnut Loaf Cake
A moist coffee and walnut loaf cake finished with a smooth espresso and vanilla glaze.
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There is something magical about the combination of coffee and walnuts in this coffee and walnut loaf cake. It has a moist, buttery sponge filled with crunchy walnuts and is finished with a smooth espresso buttercream topping.
Coffee and walnut cake is a classic combination that reminds me of my childhood. It has long been a firm favourite in British households and is still a familiar sight in cafés across England.
Using a simple one-bowl method, loaf cakes are among the easiest and most satisfying cakes to make. They require very little decoration, are easy to slice and somehow always look inviting. This coffee and walnut loaf cake is no exception—it is one of my favourites, and I know it is loved in many other households too.
For more simple baking inspiration, take a look at my collection of loaf cake recipes.
Why You’ll Love This Coffee and Walnut Loaf Cake
- Quick and easy one-bowl recipe
- Moist, buttery coffee sponge
- Filled with crunchy walnuts
- Finished with creamy espresso buttercream
- Easy to decorate
- Makes approximately 12 slices
- Ideal with afternoon tea or coffee
Recipe Highlights
Ease: A simple one-bowl recipe with impressive results.
Taste and texture: Moist, buttery sponge flavoured with coffee and walnuts, topped with smooth espresso buttercream.
Quantity: Approximately 12 slices.
Time: Around 1 hour, including 45–50 minutes of baking.
Ingredients
For this coffee and walnut loaf cake recipe, you will need the following ingredients:
- Butter – Butter gives the cake its rich flavour and tender texture. Bring it to room temperature before you begin so that it creams smoothly with the sugar. Properly softened butter should hold a slight indentation when pressed with your finger without appearing oily or melted.
I recommend using unsalted butter so that you can control the amount of salt in the recipe.
- Soft Brown Sugar – Soft brown sugar adds moisture and gives the cake a subtle caramel flavour that complements the coffee and walnuts beautifully.
- Espresso or Instant Coffee – Coffee is one of the hero flavours in this recipe. Use freshly made espresso or instant coffee dissolved in a small amount of hot water. Allow it to cool before adding it to the cake batter.
- Medium Eggs – Eggs add richness and help provide the cake’s structure. Use room-temperature eggs so that they combine more easily with the butter mixture and reduce the risk of the batter curdling.
- Milk – Milk adds moisture and helps create a soft, tender crumb. Bring it to room temperature before mixing it into the batter.
- Plain or All-Purpose Flour – Plain flour provides the structure of the loaf cake. Once the flour has been added, mix only until the batter is combined. Overmixing can produce a dense or rubbery cake.
- Walnuts – Walnuts are the second hero ingredient. They add a rich, earthy flavour and a welcome crunch throughout the sponge. Roughly chop them so that they are evenly distributed without disappearing completely into the batter.
Nigel Recommends
The Vanilla I Recommend
I recommend Taylor & Colledge vanilla products because they add a delicious depth of flavour while enhancing the other ingredients in the recipe. Choose from pure vanilla extract, vanilla paste or vanilla pods, depending on the recipe and the intensity of flavour you prefer.
Nigel Recommends
Don’t Skip the Salt
I always recommend adding a generous pinch of fine sea salt to your cakes. It balances the sweetness, softens any bitterness and brings out flavours such as chocolate, vanilla, fruit and spices. You should not taste the salt itself—it simply gives the finished cake greater depth and a more rounded flavour.
Variations
Here are a few simple ways to adapt the flavour of this coffee and walnut loaf cake.
Try Different Nuts
Replace the walnuts with pecans or hazelnuts. Pecans add a sweeter, buttery flavour, while hazelnuts work particularly well with coffee. Pine nuts can also provide an unusual, more delicate variation.
Add Coffee Liqueur
Kahlúa and Tia Maria are well-known coffee liqueurs that work beautifully in coffee cakes. Try adding a small measure to the cake batter, espresso glaze or buttercream. Remember that additional liquid may slightly change the consistency, particularly when added to icing or frosting.
Add Warm Spices
Cinnamon works wonderfully with coffee and walnuts. You could also experiment with a small amount of ground nutmeg or cloves. Both have strong flavours, so add them carefully.
Add Chocolate
Coffee, walnuts and chocolate make a delicious combination. Try adding dark chocolate chips to the cake batter or decorating the finished loaf with grated chocolate.
How to Decorate Coffee and Walnut Loaf Cake
One of the best things about loaf cakes is how simple they are to decorate.
Choose between a light espresso glaze, a thicker coffee icing or a generous layer of buttercream. The best option often depends on the occasion and whether you need to store or transport the cake.
Espresso Syrup Glaze
For a thin, glossy coffee glaze, you will need:
- 130 g icing sugar
- Two shots of espresso, or two teaspoons of instant coffee dissolved in two tablespoons of warm water
Gradually mix the coffee into the icing sugar until you have a smooth, thin paste.
Drizzle the espresso glaze over the completely cooled cake. Leave it to set before slicing and serving.
Add the coffee gradually, as you may not need all of it to achieve the right consistency.
Espresso Icing
For a thicker, creamier coffee icing, you will need:
- 130 g icing sugar
- One shot of espresso, or two teaspoons of instant coffee dissolved in one tablespoon of warm water
- One tablespoon double cream or heavy cream
Mix the coffee and cream gradually into the icing sugar until you have a thick but pourable icing.
Pour it over the cooled cake and spread it evenly with a palette knife or spatula. Leave it to set before slicing.
Buttercreams and Frostings
I used a simple espresso buttercream for this coffee and walnut loaf cake, which is included in the recipe.
You could also decorate the loaf with one of the following frostings:
Classic vanilla buttercream
A simple and versatile buttercream that can easily be flavoured or coloured.
Chocolate fudge buttercream
A rich chocolate buttercream made with melted chocolate and cocoa powder. Chocolate works particularly well with coffee and walnuts.
Cream cheese frosting
Cream cheese frosting is smooth, tangy and easy to prepare. It can be flavoured with coffee or chocolate, although it must be kept refrigerated and will not hold detailed piped decorations as firmly as traditional buttercream.
Chocolate Ganache
Chocolate ganache works with almost any cake and is wonderfully indulgent. Use it as a glossy glaze or allow it to cool and whip it into a lighter frosting.
Nutrition
Serving: one coffee and walnut loaf cake slice
Nutrition information is provided as an estimate and may vary depending on the ingredients, topping and portion sizes used.
Nutrition per serving
| Calories | 487 kcal (24%) |
| Total Fat | 26.9 g (38%) |
| Carbs | 58.8 g (23%) |
| Sugars | 41.3 g (46%) |
| Protein | 5.2 g (10%) |
Storage and Freezing
An unfrosted coffee and walnut loaf cake can be stored in an airtight container at room temperature for up to 4–5 days.
When the cake is topped with buttercream, cream cheese frosting or another perishable topping, keep it covered in the refrigerator.
For the best flavour and texture, allow refrigerated slices to come closer to room temperature before serving.
Can You Freeze Coffee and Walnut Loaf Cake?
Yes. Freeze the loaf whole or cut it into individual slices.
Wrap it carefully and place it in a freezer-safe container for up to three months.
Defrost the cake overnight in the refrigerator, then allow it to come to room temperature before serving.
For the neatest result, freeze the loaf without buttercream or icing and decorate it after defrosting.
Tools You’ll Need
Here is some of the kitchen equipment I use and recommend for this coffee and walnut loaf cake:
- Palette knife for decorating
- Baking paper
- Electric hand whisk or stand mixer
- Measuring jug
- Wire cooling rack
- Skewer or cake tester
- Silicone spatula – I recommend these sturdy silicone spatulas because they are incredibly useful for baking and everyday cooking. Their firm handles make them excellent for scraping mixtures from bowls, dishes and frying pans, while the raised centre of the larger spatula gives it extra strength. You can find them and more of my favourite baking equipment in my Amazon Cake Making collection.
- Loaf pan – I recommend this professional 2 lb loaf pan, which is made from sturdy carbon steel with a non-stick coating and is perfect for baking banana bread, lemon drizzle cake, pound cake and traditional loaves.
- Large mixing bowl – I recommend the 29 cm Mason Cash cream earthenware mixing bowl because it is sturdy, chip-resistant and has a generous four-litre capacity, making it ideal for everything from cake batters to bread doughs. It is also microwave, freezer and dishwasher safe. You can find this bowl and more of my favourite kitchen tools in my Amazon Baking Essentials collection.
Recipe Tips
Use Room-Temperature Ingredients
Room-temperature butter, eggs and milk combine more smoothly and help create an even cake batter. Cold ingredients can cause the butter mixture to split or curdle.
Line the Loaf Tin Properly
I highly recommend lining the loaf tin with baking paper or parchment paper rather than greaseproof paper. Leave a little excess paper above the sides of the tin so that you can lift the baked cake out easily.
Avoid Curdling the Batter
Add the eggs one at a time and mix on a low speed after each addition. Allow each egg to become incorporated before adding the next. Taking your time will help the mixture remain smooth. When the batter begins to curdle, add a spoonful of the measured flour and mix gently. This can help bring it back together.
Cool the Coffee Before Adding It
Hot coffee can melt the butter and affect the texture of the batter.Prepare the coffee first and allow it to cool to room temperature before adding it to the mixture.
Don’t Overmix After Adding the Flour
Once the flour has been added, mix only until there are no visible dry streaks. Overmixing develops the gluten in the flour and can produce a tough or rubbery loaf cake.
Coat the Walnuts Lightly in Flour
Tossing the chopped walnuts with a small amount of the measured flour can help prevent them from sinking to the bottom of the cake. Fold them gently into the finished batter.
Don’t Open the Oven Too Early
A sudden drop in temperature can cause the centre of the cake to sink. Avoid opening the oven door until at least three-quarters of the baking time has passed, even when you think the tin may need rotating.
Check the Cake Quickly
Towards the end of the baking time, slide the oven shelf out just far enough to test the centre of the loaf with a skewer. When the skewer comes out clean or with a few moist crumbs, the cake is ready. If wet batter remains, return it to the oven quickly and bake for a few more minutes.
Prevent the Top From Browning Too Quickly
When the top of the loaf is becoming too dark before the centre has finished baking, cover it loosely with foil for the remaining baking time.
Cool Completely Before Decorating
Leave the cake in the tin briefly before transferring it to a wire cooling rack. Allow it to cool completely before adding glaze, icing or buttercream. Decorating a warm cake can cause the topping to melt or slide off.
Frequently Asked Questions
Can I use instant coffee in coffee and walnut cake?
Yes. Dissolve the instant coffee in the quantity of hot water stated in the recipe, then allow it to cool before adding it to the batter. Choose a strong instant coffee or espresso powder for a more pronounced flavour.
Can I use espresso instead?
Yes. Fresh espresso gives the cake a rich coffee flavour. Allow it to cool to room temperature before adding it to the mixture.
Why did my coffee and walnut loaf cake sink?
The cake may sink when the oven door is opened too early, the batter is overmixed, too much raising agent is used or the centre is not fully baked. Avoid sudden temperature changes and test the cake only towards the end of the baking time.
Why did my walnuts sink to the bottom?
Large or heavy pieces of walnut can sink through a loose cake batter. Chop them into smaller pieces and coat them lightly with some of the measured flour before folding them into the mixture.
Can I make this cake without walnuts?
Yes. Leave them out or replace them with pecans, hazelnuts or another suitable alternative. The finished cake will have a different texture but will still retain its coffee flavour.
Which frosting is best for coffee and walnut cake?
Espresso buttercream is the classic choice and gives the cake a rich coffee flavour. A simple coffee glaze is lighter, while cream cheese frosting or chocolate ganache creates a more indulgent finish.
How do I know when the loaf cake is baked?
Insert a skewer into the centre of the loaf. It should come out clean or with a few moist crumbs. Wet batter on the skewer means the cake needs a little longer in the oven.
Can I make this coffee and walnut loaf cake in advance?
Yes. The cake can be baked a day or two before serving. Store it in an airtight container and decorate it once completely cool. Alternatively, freeze the undecorated loaf and add the topping after it has defrosted.
Coffee and Walnut Loaf Cake
INGREDIENTS LIST
- 250 g butter (softened)
- 250 g soft light brown sugar
- 3 medium eggs
- 60 ml espresso coffee (two shots of espresso or 1 tsp instant coffee made with 2 tablespoons of warm water)
- 100 ml milk
- 250 g self-raising or plain flour (all-purpose)
- ½ tsp fine sea salt
- 1 tsp ground cinnamon
- 1½ tsp baking powder
- 70 g walnuts (chopped )
Coffee Buttercream
- 250 g icing sugar (US powdered sugar)
- 45 g butter
- 30 ml espresso coffee (or 1 tbsp instant coffee dissolved in 1 tbsp warm water)
- 1 pinch of fine sea salt
Decoration
- 30 g walnuts
Preparation
- Preheat your oven to 170°C fan / 375°F / Gas 5 and line a 2-pound loaf pan (900g) with baking or parchment paper.
- Instant coffee: if you are using instant coffee, mix it with tablespoons of water and leave to cool.
- In a large mixing bowl, beat the butter and sugar together until the mixture is very light and fluffy. Then add the eggs one at a time, beating well after each addition.
- Mix in the milk and the espresso coffee.
- Sift the flour, baking powder, ground cinnamon and salt into the bowl and stir until you have a smooth batter. Finally, incorporate the chopped walnuts.
- Spoon the mixture into the prepared loaf pan and smooth over the surface of the cake batter to level it.
- Baking: Place in the pre-heated oven and bake for 45-50 minutes until golden and a toothpick or skewer comes out with a sticky crumb or two attached. Watch it carefully as it has a tendency to easily over bake. Tent the cake with foil for the final 15 minutes if it is browning too quickly.
- Allow the cake to cool in the baking tin/pan for 15 minutes, then transfer to a wire rack to cool completely.
- Buttercream: Make the coffee and melt the butter over a low heat or in a microwave. Whisk together the icing sugar, coffee, salt and butter in a small bowl, then drizzle it over the cooled loaf and scatter the chopped walnuts on top.
- Allow the cake to set before slicing.
Notes & Tips
FROM MY KITCHEN TO YOURS
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