Name: Mary Berry Coffee And Walnut Cupcakes Recipe
Prep time: 20 min
Cook time: 20 min
Total time: 55 min
Ingredients: 125g unsalted butter, softened; 125g caster sugar; 2 large eggs, at room temperature; 125g self-raising flour, sifted; 1 tsp baking powder; 2 tbsp strong instant coffee, dissolved in 1 tbsp hot water, cooled; 60g walnuts, roughly chopped; 150g unsalted butter, softened; 300g icing sugar, sifted; 1.5 tbsp strong instant coffee, dissolved in 1 tbsp hot water, cooled; 1 to 2 tbsp whole milk; 12 walnut halves, for decoration

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These coffee and walnut cupcakes are light, tender sponges with a pronounced roasted coffee flavour running through every bite, topped with a silky, cream-coloured coffee buttercream and finished with a walnut half that adds a pleasant crunch against the soft crumb. The combination of espresso and toasted walnuts gives each cupcake a warm, slightly bitter depth that balances the sweetness of the frosting beautifully.

This recipe produces consistent results in a standard home oven, using straightforward techniques that any baker at beginner level can follow with confidence. The batch size suits a family afternoon tea or a small gathering, and the cupcakes travel well to bake sales or picnics. From start to finish, the recipe is ready in around 55 minutes.

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Ingredients

For The Cupcake Sponge

125g unsalted butter, softened
125g caster sugar
2 large eggs, at room temperature
125g self-raising flour, sifted
1 tsp baking powder
2 tbsp strong instant coffee, dissolved in 1 tbsp hot water, cooled
60g walnuts, roughly chopped

For The Coffee Buttercream

150g unsalted butter, softened
300g icing sugar, sifted
1½ tbsp strong instant coffee, dissolved in 1 tbsp hot water, cooled
1–2 tbsp whole milk

To Finish

12 walnut halves, for decoration

How to Make Mary Berry Coffee And Walnut Cupcakes

Prepare the oven and tin

Heat the oven to 180°C (160°C fan, Gas 4) and line a 12-hole muffin tin with paper cupcake cases. Using fan-assisted heat prevents the tops from doming unevenly and keeps a level surface for the buttercream.

Dissolve the coffee

Stir 2 tablespoons of strong instant coffee granules into 1 tablespoon of just-boiled water until fully dissolved, then set aside to cool completely before adding to the batter. Hot liquid added directly to the mixture can melt the butter and cause the batter to split.

Cream the butter and sugar

Beat the softened butter and caster sugar together in a large bowl using a hand-held electric mixer on medium speed for 3 to 4 minutes, until the mixture is very pale and noticeably fluffy. This stage creates the air pockets that give the sponge its tender, light crumb.

Add the eggs and coffee

Add the eggs one at a time, beating well after each addition. Pour in the cooled coffee liquid and mix until combined. If the mixture looks slightly curdled at this stage, add a tablespoon of the measured flour and beat again to bring it back together.

Fold in the flour and walnuts

Sift the self-raising flour and baking powder over the mixture and fold in gently using a large metal spoon with slow, sweeping strokes. Add the roughly chopped walnuts and fold through until just evenly distributed. Avoid overworking the batter at this point, as it will tighten the gluten and produce a dense sponge.

Fill the cases and bake

Divide the batter evenly between the 12 cases, filling each to about two-thirds full. Bake on the middle shelf for 18 to 20 minutes, until the tops are golden and spring back lightly when pressed. Transfer to a wire rack and leave to cool completely before frosting.

Make the coffee buttercream

Beat the softened butter on its own for 2 minutes until pale, then add the sifted icing sugar in two additions, mixing on a low speed to start to prevent a cloud of sugar. Add the cooled coffee mixture and beat on medium for 2 to 3 minutes until smooth, fluffy, and spreadable. Add a splash of milk to loosen if the consistency feels too stiff to pipe.

Frost and decorate

Spoon the buttercream into a piping bag fitted with a large star nozzle and pipe a generous swirl onto each cooled cupcake. Press one walnut half gently into the centre of each swirl. The cupcakes are best served at room temperature, when the buttercream holds a soft, silky finish.

Tips for the Best Coffee and Walnut Cupcakes

01 Why did my cupcake sponge sink in the middle after baking? − +

Sinking almost always means the oven door was opened too early, or the oven temperature was too low. Wait until at least 15 minutes have passed before checking, and verify your oven temperature with a separate thermometer, as many domestic ovens run 10 to 15 degrees cooler than the dial suggests.

02 Why is my cupcake sponge dry rather than moist and tender? − +

Overbaking is the most common cause. Check the cupcakes at 18 minutes, as the smaller volume means they bake faster than a full-sized cake. The sponge should feel just set when pressed and a skewer should come out with a few moist crumbs, not bone dry.

03 Why is my buttercream grainy or not smooth? − +

Grainy buttercream is usually caused by under-sifted icing sugar or butter that was too cold. Sift the sugar thoroughly before adding it, and make sure the butter has been at room temperature for at least an hour. Beat the finished buttercream for a full 3 minutes to dissolve any remaining sugar crystals.

04 Why does the coffee flavour taste weak in the finished cupcake? − +

The strength of coffee flavour depends entirely on the concentration of the dissolved instant coffee. Use a good-quality, strong instant coffee rather than a light-roast variety, and dissolve it in the smallest amount of water possible to create a concentrated solution rather than a dilute liquid.

05 Why did my batter look curdled when I added the eggs? − +

Cold eggs are the usual culprit, as the temperature difference causes the butter and egg to separate. Always use eggs at room temperature, and add them slowly, one at a time. If curdling does happen, a tablespoon of sifted flour beaten in quickly will bring the mixture back to a smooth, cohesive batter.

Coffee And Walnut Cupcakes Serving Style

Serving Suggestions

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Serve at room temperature alongside a pot of freshly brewed Assam or Darjeeling tea for a classic British afternoon spread.

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Arrange on a tiered cake stand with shortbread fingers and finger sandwiches for a full afternoon tea presentation.

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Dust with a very light shake of cocoa powder over the buttercream swirl just before serving to add a subtle visual contrast.

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Pair with a double espresso or a strong flat white to echo the coffee notes running through the sponge and buttercream.

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Present in a gift box lined with tissue paper as an edible gift, keeping them in a single layer so the piped buttercream stays intact during transport.

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Storage

Up to 2 Days

Room Temperature

Keep the cupcakes in an airtight container at room temperature for up to 2 days, away from direct sunlight or heat sources.

Up to 4 Days

Refrigerator

Store in an airtight container in the fridge for up to 4 days. Remove the cupcakes around 30 minutes before serving to allow them to return to room temperature, which restores the soft texture of both the sponge and the buttercream.

Up to 3 Months

Freezing

Freeze the un-iced sponges only, wrapped individually in cling film and placed in a freezer bag, for up to 3 months. Defrost overnight at room temperature and frost with fresh buttercream before serving.

Nutrition

Calories

390

kcal per serving

42g

Carbohydrates

3.5g

Protein

22g

Fat

12g

Saturated Fat

95mg

Sodium

Nutrition values are estimates based on standard ingredient brands and may vary depending on the specific ingredients used and the size of each serving.

FAQs

01 Can I use espresso instead of instant coffee in this recipe? − +

Yes, a shot of freshly brewed espresso works well in place of dissolved instant coffee. Use one standard shot (approximately 30ml) in the sponge and reduce or omit the water accordingly. Allow the espresso to cool completely before adding it to the batter.

02 Can I make Mary Berry coffee and walnut cupcakes ahead of time? − +

The sponges can be baked a day ahead and stored un-iced in an airtight container at room temperature. Make the buttercream and frost the cupcakes on the day you plan to serve them for the best texture and finish. The buttercream can also be made in advance and kept in the fridge for up to 2 days, then re-beaten before piping.

03 Can I use pecans instead of walnuts in this cupcake recipe? − +

Pecans are a good alternative to walnuts and give a slightly sweeter, buttery flavour compared to the earthier bitterness of walnut. Use the same quantity and chop them to a similar size. The overall texture and baking time remain unchanged.

04 Can I double this recipe to make more cupcakes? − +

This recipe doubles well. Simply multiply all ingredient quantities by two and bake in two separate muffin tins. Avoid overcrowding the oven, as this can reduce airflow and cause uneven baking. Bake one tray on the middle shelf and the second on the shelf just above, then swap halfway through the baking time.

05 Can I make this recipe gluten-free? − +

Substitute the self-raising flour with a good-quality gluten-free self-raising flour blend at a one-to-one ratio and add half a teaspoon of xanthan gum if the flour blend does not already contain it. The sponge texture will be slightly denser, but the coffee and walnut flavour comes through clearly. Check all other labelled ingredients are certified gluten-free before baking for someone with coeliac disease.

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Conclusion

This Mary Berry coffee and walnut cupcakes recipe delivers a reliably tender sponge with a properly pronounced coffee flavour, a smooth, fluffy buttercream, and the satisfying crunch of chopped walnuts throughout. The steps are straightforward, the ingredients are easy to source, and the method is forgiving enough for bakers who are still building confidence. Each batch makes 12 cupcakes, ideal for sharing at afternoon tea, a bake sale, or a casual gathering with friends and family.

If the recipe works well for you, leave a comment below to share how your batch turned out, and feel free to pass it along to anyone who enjoys a classic bake. For another coffee-inspired favourite, you might also enjoy the Mary Berry cappuccino cake recipe, which carries those same warm, roasted notes into a stunning layered celebration cake.