How Do You Make Coffee and Walnut Cake?

How Do You Make Coffee and Walnut Cake? A Classic Bake for Coffee Lovers

Few desserts pair better with a steaming cup of coffee than a slice of coffee and walnut cake. It’s light, fluffy, and packed with rich coffee flavour, balanced perfectly by the crunch of walnuts and a smooth coffee buttercream.

Here’s how to make this timeless favourite at home — perfect for afternoon tea, birthdays, or any coffee lover’s treat.

Ingredients

For the cake

  • 200g unsalted butter (softened)

  • 200g caster sugar

  • 4 large eggs

  • 200g self-raising flour

  • 1 tsp baking powder

  • 2 tbsp instant coffee, dissolved in 1 tbsp boiling water

  • 75g chopped walnuts

For the coffee buttercream

  • 150g unsalted butter (softened)

  • 300g icing sugar

  • 1 tbsp coffee, dissolved in 1 tbsp boiling water

To decorate

  • A handful of walnut halves to add the top of the cake.

Equipment

  • Two 20cm sandwich tins or cake tins

  • Baking paper

  • Electric mixer or wooden spoon

  • Serving plate

Step-by-Step: How to Make Coffee and Walnut Cake

1. Prepare the Tins and Preheat the Oven

Grease the cake tins and line with baking parchment.
Preheat your oven to 180°C (160°C fan / gas mark 4).

2. Make the Cake Batter

In a large bowl, beat the butter and sugar together until light and creamy.
Add the eggs one at a time, mixing well after each.

Sift in the self-raising flour and baking powder, then fold gently. Stir in the dissolved coffee and chopped walnuts until combined.

3. Bake the Cakes

Divide the mixture evenly between the two tins.
Smooth the tops and bake for 20–25 minutes, or until a skewer inserted in the centre comes out clean.
Allow to cool in the tins for 5 minutes, then transfer to a wire rack to cool completely.

4. Make the Coffee Buttercream

Beat the butter until soft, then gradually add icing sugar.
Mix in the dissolved coffee until smooth and fluffy.

5. Assemble the Cake

Place one sponge on a serving plate and spread half the buttercream evenly over the top.
Place the second sponge on top and spread the remaining buttercream over the top of the cake.
Decorate with walnut halves for a classic finish.

Tips for the Perfect Coffee and Walnut Cake

  • Use freshly made coffee for the best flavour.

  • For extra depth, use a dark roast such as Italian Blend Coffee or Forte Blend Coffee.

  • If you prefer a lighter touch, try Arabica Blend Coffee for a smooth, balanced flavour.

  • Ensure all your ingredients are at room temperature before mixing for a better texture.

Variations You’ll Love

  • Coffee & Walnut Cupcakes: Divide the mixture into cupcake cases and bake for 15–18 minutes.

  • Mocha Twist: Add 1 tbsp of cocoa powder to the batter for a hint of chocolate.

  • Vegan Version: Use plant-based butter and flax eggs for a dairy-free alternative.

Love Coffee Bakes?

If you enjoy coffee-flavoured treats, you’ll also love our guide on What Flavours Go With Coffee — perfect for pairing or experimenting with your next dessert.

Or, learn more about brewing with How to Make Coffee in a Cafetière for a fresh cup to serve alongside your bake.

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