Coffee and Walnut Cake

Coffee and Walnut Cake

Serves 12 510 kcal per serving Prep 25 min Cook 30 min Passive 1 h

Ingredients

  • 225g Unsalted Butter, softened
  • 225g Caster Sugar
  • 4 Large Eggs
  • 225g Self-Raising Flour
  • 2 teaspoons Instant Coffee Granules
  • 2 tablespoons Boiling Water
  • 100g Walnuts, finely chopped
  • 250g Unsalted Butter, softened (for the buttercream)
  • 400g Icing Sugar
  • 2 teaspoons Instant Coffee Granules
  • 1 tablespoon Boiling Water
  • Walnut Halves, for decoration

Instructions

  1. Preheat the oven to 180°C (160°C fan) and grease two 20cm round cake tins.
  2. Dissolve 2 teaspoons of instant coffee in 2 tablespoons of boiling water and allow it to cool slightly.
  3. Beat the butter and caster sugar together until pale and fluffy.
  4. Add the eggs one at a time, beating well after each addition.
  5. Fold in the self-raising flour, cooled coffee mixture and chopped walnuts until evenly combined.
  6. Divide the batter evenly between the prepared tins and level the tops.
  7. Bake for 25–30 minutes until golden and a skewer inserted into the centre comes out clean.
  8. Leave the cakes to cool for 10 minutes before transferring them to a wire rack to cool completely.
  9. For the buttercream, dissolve the remaining coffee granules in the boiling water and let it cool.
  10. Beat the butter until creamy, gradually add the icing sugar, then mix in the cooled coffee until smooth and fluffy.
  11. Sandwich the cakes with half the buttercream, spread the remainder over the top and decorate with walnut halves.

Tips

  • Use strong instant coffee for the best flavour.
  • Toast the walnuts lightly before adding them for extra aroma.
  • Make sure the sponge layers are completely cool before applying the buttercream.

Variations

  • Replace walnuts with pecans for a slightly sweeter flavour.
  • Add a splash of coffee liqueur to the buttercream.
  • Decorate with chopped walnuts and chocolate-covered coffee beans.

Storage

Store in an airtight container at room temperature for up to 3 days or refrigerate for up to 5 days. Bring to room temperature before serving.

Serving Suggestions

  • Serve with freshly brewed coffee.
  • Enjoy with English breakfast tea.
  • Top each slice with a few extra toasted walnuts.

Frequently Asked Questions

Can I use freshly brewed coffee instead of instant coffee?

Instant coffee provides a stronger flavour without adding excess liquid, making it the preferred choice for this cake.

Can I freeze Coffee and Walnut Cake?

Yes. Freeze the unfrosted sponge layers for up to 3 months, then thaw and frost before serving.

Do I have to use walnuts?

Walnuts are traditional, but pecans or hazelnuts also work well if you prefer a different nut.

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