...
About Me Contact Us

Cracking Coffee and Walnut Cake Mary Berry-Inspired

By sophie on May 3, 2026

A delicious Coffee and Walnut Cake Mary Berry-Inspired, with creamy frosting and whole walnuts on top.

Oh, there’s just something utterly comforting about a classic bake, isn’t there? That feeling of warmth spreading through the kitchen as the unmistakable scent of a delicious cake fills the air is just pure joy. This absolutely cracking Coffee and Walnut Cake Mary Berry-Inspired is one of those recipes that has truly stood the test of time. I remember my Mum making a version of this when I was a little thing, and that lovely combination of rich coffee and crunchy walnuts always felt like such a treat. It’s surprisingly light, wonderfully moist, and has that gorgeous buttercream that just melts in your mouth. Perfect for a cuppa, a celebration, or just because you fancy a slice of something truly delightful.

A delicious Coffee and Walnut Cake Mary Berry-Inspired, topped with coffee buttercream and whole walnuts.

Why You’ll Love This Coffee and Walnut Cake Mary Berry-Inspired

  • It’s surprisingly simple to whip up, even for beginners!
  • The coffee and walnut pairing is an absolute classic for a reason.
  • You get that wonderfully moist crumb that’s just divine.
  • The creamy, dreamy coffee buttercream is the perfect finishing touch.
  • It’s absolutely ideal for afternoon tea or any special occasion.
  • You’ll get that lovely, light bake that Mary Berry is famous for.

Ingredients for Your Coffee and Walnut Cake

  • For the Cake:
  • 1 cup unsalted butter, softened
  • 1 cup caster sugar
  • 4 medium eggs
  • 2 cups self-raising flour
  • 3 tsp instant coffee granules
  • 3 tbsp boiling water
  • 1 cup walnuts, roughly chopped
  • For the Coffee Buttercream:
  • ¾ cup unsalted butter, softened
  • 2½ cups icing sugar
  • 3 tsp instant coffee granules
  • 2 tbsp boiling water
  • ½ cup walnut halves

Step-by-Step Guide to Making the Coffee and Walnut Cake

Step 1: Right then, let’s get this show on the road! First things first, you’ll want to get your oven preheated to 180°C fan. Then, grab two 7-inch round sandwich tins and give them a good grease and lining with some baking paper. This just stops any sticky disasters, you know?

Step 2: Next, we need to get our coffee flavour sorted. Dissolve those 3 teaspoons of instant coffee granules in the 3 tablespoons of boiling water. Give it a little stir and then just let it cool down a bit while we crack on with the cake batter. Don’t want it too hot when it goes in!

Step 3: Now for the main event! Beat the softened butter and caster sugar together until it’s all pale and wonderfully fluffy. This bit takes a good 4 to 5 minutes if you’re doing it by hand, but it’s worth every second for a light cake. If you’ve got a stand mixer, it’ll do the hard work for you.

Step 4: Time for the eggs! Add them in one at a time, making sure you beat really well after each one. This helps to properly combine everything and stop it from looking a bit curdled. Patience here is key!

Step 5: Gently, and I mean gently, fold in the self-raising flour. You just want to bring it together until you can’t see any dry bits anymore. Overmixing at this stage can make the cake a bit tough, so be tender! For a lighter sponge, ensure you don’t overmix after adding the flour, much like when making a traditional treacle tart where lightness is also key.

Step 6: Now, stir in that lovely cooled coffee mixture we made earlier, along with the chopped walnuts. Give it a good mix to make sure they’re all distributed evenly throughout the batter so you get a bit of crunch in every bite.

Step 7: Divide your glorious batter evenly between those prepared sandwich tins. Give the tops a little smooth over so they bake nicely and you’re ready for the oven. Trust me, the smell that starts to come out is just heavenly.

Step 8: Bake for about 28 to 32 minutes. You’ll know they’re ready when they’re golden brown and a skewer popped into the centre comes out clean. If you’re in doubt, just give it another minute or two – better safe than sorry!

Step 9: Once they’re out, let the cakes cool in their tins for about 10 minutes. This is just to let them firm up a bit before you carefully turn them out onto a wire rack to cool completely. Don’t rush this bit, they need to be properly cool before the buttercream goes on!

Step 10: Right, buttercream time! For the frosting, dissolve your coffee granules in the boiling water – same as before – and let it cool down completely. It’s super important it’s cool, or it’ll melt all that lovely butter!

Step 11: Beat your softened butter until it’s wonderfully creamy and pale. Then, gradually add the icing sugar, beating it in bit by bit until it’s all smooth and lovely. This can get a bit dusty, so maybe close your eyes sometimes!

Step 12: Stir in that cooled coffee mixture and give it a good whisk. You want it to be light, fluffy, and smelling absolutely divine. It should be spreadable but not too runny.

Step 13: Time to assemble! Place one of your cooled cake sponges on your serving plate. Spread about half of that gorgeous coffee buttercream over the top. I like to go right to the edges like Mary does!

Step 14: Gently pop the second sponge layer on top of the buttercream. Then, spread the rest of your lovely buttercream all over the top of the cake, smoothing it out as best you can.

Step 15: The grand finale! Decorate with those pretty walnut halves over the top. It just finishes the cake off perfectly. You could even add a few extra coffee beans if you’re feeling fancy. Pop it in the fridge for about 10 minutes to let the buttercream set slightly before slicing.

A slice taken from a Coffee and Walnut Cake Mary Berry-Inspired, showing two layers of sponge and coffee buttercream, topped with walnuts.

Serving Suggestions for Your Coffee and Walnut Cake

A Pot of Strong Brew: Of course, a lovely cup of coffee is the absolute classic companion! A fresh filter coffee or even a rich coffee mousse really brings out the flavours in the cake.

Simple Vanilla Ice Cream: The cool, creamy sweetness of vanilla ice cream is a lovely contrast to the warm coffee notes and the slight crunch of the walnuts. It’s just divine!

Light Whipped Cream: A simple dollop of lightly sweetened whipped cream can add a touch more indulgence without overpowering the cake’s delicate flavour profile.

Storing and Reheating Your Coffee and Walnut Cake

Keeping this beauty fresh is super easy! Once it’s completely cooled, pop it into an airtight cake tin. It’ll stay lovely and moist in there for a good 3 days at room temperature. If it’s really warm where you live, popping it in the fridge is fine too, but let it come back to room temperature before serving so the buttercream is nice and soft!

Frequently Asked Questions About This Coffee and Walnut Cake

Can I make this cake dairy-free?

You certainly can try! For the cake itself, you’d swap the butter for a good quality dairy-free spread and use a plant-based milk. For the buttercream, it’s a bit trickier as dairy-free butter can sometimes be softer, so you might need to add a little more icing sugar or a tiny bit of cornflour to stiffen it up. It won’t be exactly the same, but still delicious!

What if I don’t have self-raising flour?

No worries at all! If you’ve only got plain flour (all-purpose flour), you can easily make your own self-raising. For every cup of plain flour, just add 1½ teaspoons of baking powder. Give it a really good whisk together before you start measuring it out for the recipe. It works a treat and gives you that lovely lift Mary Berry is famous for!

How do I get a perfectly even bake and a lovely flat top?

Ah, the quest for the perfect flat top! Make sure your oven is spot on temperature-wise. Using exactly the same size tins is crucial, and don’t overfill them – about two-thirds full is usually spot on. If you think one side is baking faster, you can even carefully turn the tins around halfway through. Sometimes a slight dome is inevitable, but it’s easily fixed once cooled – just give it a gentle trim before adding the buttercream, much like you might do for a classic carrot cake!

Before You Go

I really hope you give this Coffee and Walnut Cake Mary Berry-Inspired a go! It’s such a lovely bake, perfect for sharing. Do let me know in the comments how it turns out for you, or even better, tag me in your creations on Pinterest via this link! Happy baking! For more simple cake delights, why not try my Victoria Sponge.

Print
clock icon cutlery icon flag icon folder icon instagram icon pinterest icon facebook icon print icon squares icon heart icon heart solid icon
A delicious Coffee and Walnut Cake Mary Berry-Inspired, topped with walnuts and coffee buttercream.

Coffee and Walnut Cake


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

  • Author: Jordan Bell
  • Total Time: 55 min
  • Yield: 12 slices
  • Diet: Vegetarian

Description

A light, fluffy coffee and walnut cake layered with creamy coffee buttercream, perfect for afternoon tea.


Ingredients

  • 1 cup unsalted butter, softened
  • 1 cup caster sugar
  • 4 medium eggs
  • 2 cups self-raising flour
  • 3 tsp instant coffee granules
  • 3 tbsp boiling water
  • 1 cup walnuts, roughly chopped
  • ¾ cup unsalted butter, softened
  • 2½ cups icing sugar
  • 3 tsp instant coffee granules
  • 2 tbsp boiling water
  • ½ cup walnut halves


Instructions

  1. Preheat your oven to 180°C fan. Grease and line two 7-inch round sandwich tins with baking paper.
  2. Dissolve the instant coffee granules in the boiling water and let it cool slightly.
  3. Beat the butter and caster sugar together for 4 to 5 minutes until pale and fluffy.
  4. Add the eggs one at a time, beating well after each addition.
  5. Gently fold in the self-raising flour until just combined.
  6. Stir in the cooled coffee mixture and chopped walnuts.
  7. Divide the batter evenly between the prepared tins and smooth the tops.
  8. Bake for 28 to 32 minutes until golden and a skewer inserted into the centre comes out clean.
  9. Let the cakes cool in the tins for 10 minutes before transferring to a wire rack to cool completely.
  10. For the buttercream, dissolve the instant coffee granules in the boiling water and let it cool.
  11. Beat the butter until creamy and pale. Gradually beat in the icing sugar until smooth.
  12. Mix in the cooled coffee mixture and whisk until light and fluffy.
  13. Place one sponge layer on a serving plate and spread over half of the buttercream.
  14. Top with the second sponge layer and spread the remaining buttercream over the top.
  15. Decorate with walnut halves before serving.

Notes

  • For the lightest sponge, avoid overmixing once the flour is added.
  • The cake keeps well in an airtight tin for up to 3 days.
  • Prep Time: 25 min
  • Cook Time: 30 min
  • Category: Cakes
  • Method: Baking
  • Cuisine: British

Leave a Comment

Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star


Privacy Policy

Terms of Service

Disclaimer