Coffee and walnut cake is a timeless classic that combines the rich, deep flavor of coffee with the nutty crunch of walnuts. Perfect for afternoon tea, celebrations, or just a cozy treat at home, this cake is moist, flavorful, and irresistibly aromatic. In this guide, you’ll learn how to make a perfect coffee and walnut cake from scratch, with simple ingredients and easy-to-follow steps.

Why Coffee and Walnut Cake is a Favorite

The combination of coffee and walnut is more than just a flavor pairing—it’s a culinary experience. Coffee adds a subtle bitterness that balances the sweetness of the cake, while walnuts give texture and a nutty aroma. This cake is perfect for those who love a slightly sophisticated dessert that is both indulgent and comforting.

Ingredients You Will Need

For the Cake:

  • 225g unsalted butter, softened
  • 225g caster sugar
  • 4 large eggs
  • 225g self-raising flour
  • 2 teaspoons baking powder
  • 3 tablespoons instant coffee granules, dissolved in 2 tablespoons hot water
  • 100g chopped walnuts

For the Coffee Buttercream:

  • 150g unsalted butter, softened
  • 300g icing sugar, sifted
  • 2 teaspoons instant coffee, dissolved in 1 tablespoon hot water
  • 1 teaspoon vanilla extract

For Decoration (Optional):

  • Walnut halves
  • Coffee beans or chocolate shavings

Step-by-Step Instructions

1. Prepare the Oven and Pans

  • Preheat your oven to 180°C (350°F) for fan ovens, or 200°C (400°F) for conventional ovens.
  • Grease and line two 20cm (8-inch) round cake tins with baking parchment.

2. Mix the Cake Batter

  • In a large bowl, cream together the softened butter and sugar until light and fluffy.
  • Gradually add the eggs, one at a time, beating well after each addition. If the mixture starts to curdle, add a spoonful of flour to stabilize it.
  • Fold in the flour and baking powder gently using a spatula or a metal spoon.
  • Add the dissolved coffee and mix until evenly incorporated.
  • Finally, fold in the chopped walnuts, ensuring they are distributed throughout the batter.

3. Bake the Cake

  • Divide the batter evenly between the two prepared cake tins.
  • Smooth the tops with a spatula and bake in the preheated oven for 25–30 minutes, or until a skewer inserted in the center comes out clean.
  • Allow the cakes to cool in the tins for 10 minutes before transferring them to a wire rack to cool completely.

4. Prepare the Coffee Buttercream

  • Beat the softened butter until creamy.
  • Gradually add the sifted icing sugar, mixing thoroughly.
  • Add the dissolved coffee and vanilla extract, and beat until smooth and fluffy.

5. Assemble the Cake

  • Place one cake layer on a serving plate or cake board.
  • Spread a generous layer of coffee buttercream on top.
  • Place the second cake layer on top and cover the entire cake with the remaining buttercream.

6. Decorate the Cake

  • Press walnut halves along the sides or top of the cake.
  • Optionally, sprinkle coffee beans or chocolate shavings for a professional touch.

Tips for the Perfect Coffee and Walnut Cake

  • Use Freshly Chopped Walnuts: They retain crunch and flavor better than pre-chopped or pre-packaged walnuts.
  • Dissolve Coffee in Hot Water: This ensures it mixes evenly into the batter without leaving granules.
  • Don’t Overmix the Batter: Folding gently prevents the cake from becoming dense.
  • Cool Completely Before Frosting: Frosting a warm cake can cause the buttercream to melt and slide off.
  • Enhance the Coffee Flavor: For a more intense coffee taste, brush the cooled cake layers with a tablespoon of brewed coffee before frosting.

Serving Suggestions

  • Pair with a hot cup of coffee or tea for an indulgent treat.
  • Slice into generous wedges for celebrations or afternoon gatherings.
  • Refrigerate leftovers and bring to room temperature before serving to retain softness and flavor.

Conclusion

Making a coffee and walnut cake from scratch is easier than it seems and extremely rewarding. With its moist texture, rich coffee flavor, and nutty crunch, this cake is a perfect centerpiece for any occasion. By following this detailed step-by-step guide, you can enjoy a homemade classic that’s both elegant and comforting.

Whether you’re baking for family, friends, or just yourself, this cake promises delicious results every time. So grab your mixing bowl, coffee, and walnuts, and create a cake that’s sure to impress.

FAQ’s

Can I use ground coffee instead of instant coffee in the cake?

Yes, you can use finely ground coffee, but it’s best to dissolve it in a little hot water first to ensure it blends evenly into the batter without leaving gritty bits.

How do I keep the cake moist?

To maintain moisture, avoid overbaking, fold the batter gently, and consider brushing the cooled cake layers with a little brewed coffee before frosting. Proper storage in an airtight container also helps.

Can I make this cake gluten-free?

Yes, substitute the self-raising flour with a gluten-free flour blend that includes a raising agent. The texture may be slightly different, but the flavor will remain delicious.

How long will the cake stay fresh?

The cake will stay fresh for 2–3 days at room temperature in an airtight container. For longer storage, refrigerate for up to 5 days, or freeze for 1–2 months.

Can I decorate the cake differently?

Absolutely! You can add chocolate shavings, extra walnut halves, a dusting of cocoa powder, or even a drizzle of coffee glaze for added flavor and a professional finish.