These lemon cupcakes are soft, buttery little cakes made with fresh lemon zest and juice, then finished with a tangy lemon buttercream. They suit a UK afternoon tea, a birthday table or any occasion that calls for a bright, easy-to-share bake.
Ingredients
- 150 g (⅔ cup) unsalted butter, softened, for the cupcakes
- 150 g (¾ cup) caster sugar
- 3 large eggs, at room temperature (about 150 g without shells)
- 150 g (1¼ cups) self-raising flour
- 1 tsp (4 g) baking powder
- ⅛ tsp (about 0.75 g) fine salt
- Zest of 2 unwaxed lemons, finely grated
- 30 ml (2 tbsp) freshly squeezed lemon juice
- 30 ml (2 tbsp) milk
- 100 g (7 tbsp) unsalted butter, softened, for the buttercream
- 200 g (1⅔ cups) icing sugar, sifted if lumpy
- 15–30 ml (1–2 tbsp) lemon juice, for the buttercream
- 1 tsp (about 2 g) finely grated lemon zest, optional, for the buttercream
Instructions
- Heat the oven to 180°C (350°F), or 160°C (320°F) for a fan oven. Line a 12-hole muffin tin with paper cases. Take the butter and eggs out of the fridge in advance if possible; room-temperature ingredients combine more evenly and help the cakes rise consistently.
- Finely grate the zest from two lemons, taking only the yellow outer peel and avoiding the bitter white pith. Squeeze the lemons and measure 30 ml (2 tbsp) juice for the cake. Set aside another lemon or some of the remaining juice for the icing, if you want a particularly sharp finish.
- Put the softened cake butter and caster sugar in a large bowl. Beat with an electric mixer for about 3 minutes, scraping down the bowl once, until the mixture looks paler and fluffy. Add the eggs one at a time, beating briefly after each addition. If the mixture looks slightly curdled, add a spoonful of the measured flour and continue; it should come together when the dry ingredients are added.
- In a separate bowl, stir together the self-raising flour, baking powder and salt. Add this mixture to the butter bowl in two additions, mixing on low speed or folding with a spatula just until no dry flour remains. Fold in the lemon zest, 30 ml (2 tbsp) lemon juice and milk. The batter should be thick but spoonable. Avoid beating it for a long time after the flour goes in, which can make the crumb less tender.
- Divide the batter evenly among the paper cases, filling each about two-thirds full. A tablespoon or small scoop makes portioning easier; aim for similar amounts so the cupcakes bake at the same rate. Bake for 18–22 minutes, turning the tin only if your oven has a known hot spot. The tops should spring back gently when touched, and a skewer inserted into the centre should come out clean or with a few dry crumbs. For a thermometer check, the centre should reach 71°C (160°F), the USDA FSIS safe minimum temperature for egg dishes.
- Leave the cupcakes in the tin for 5 minutes, then lift them onto a wire rack. Cool completely, usually about 40 minutes, before icing. Buttercream melts on a warm cake, so wait until the centres and bases feel cool rather than merely allowing the tops to reach room temperature.
- To make the buttercream, beat the softened icing butter for 1–2 minutes until smooth. Add the sifted icing sugar in two or three batches, mixing slowly at first to avoid a sugar cloud, then beat until pale and fluffy. Add 15 ml (1 tbsp) lemon juice and the optional teaspoon of zest. Taste, then add more juice a little at a time if you prefer a sharper icing. If it becomes too loose, beat in a little more icing sugar.
- Spread or pipe the buttercream over the cooled cupcakes. A small offset spatula gives a simple finish, while a piping bag with a large star nozzle makes neat swirls. Add a little extra lemon zest just before serving if desired.
Tips
- Measure flour accurately. If using cups, spoon flour lightly into the cup and level the top rather than scooping directly from the bag, which can pack in too much. Weighing the 150 g gives the most consistent result, especially with flour that has settled in storage.
- Keep the zest fine. A fine grater distributes the fragrant yellow peel through the batter without leaving chewy strips. Zest the lemons before squeezing them, and stop when you reach the white pith because it can make the cakes taste bitter.
- Use suitable flour if needed. If self-raising flour is unavailable, replace it with 150 g (1¼ cups) plain flour and increase the baking powder to 2 tsp (8 g). Do not use both the self-raising flour and the larger baking-powder amount, or the cupcakes may rise too quickly and then sink.
- Adjust the icing carefully. Lemon juice thins buttercream quickly, so add it in small amounts. For a softer, less sharp flavour, use 1 tbsp juice and add a teaspoon of milk only if the icing needs loosening; milk makes it creamier but reduces the lemon intensity.
Serving Suggestions
Serve the cupcakes at room temperature so the sponge feels soft and the buttercream is easy to eat. They are a natural fit for afternoon tea alongside black tea, Earl Grey or a pot of herbal tea, and their citrus flavour also works well after a rich meal when a large dessert might feel too heavy. Arrange them on a platter with the piped tops facing upwards, and add a little finely grated zest just before bringing them to the table.
For a simple celebration, add a few sugar pearls or a small piece of candied lemon peel to each swirl. Keep decorations modest if the cupcakes will be transported, since tall icing can be knocked against a lid. If serving them outdoors in warm weather, keep them chilled until shortly before eating because buttercream softens in heat. Set out only the amount you expect to serve and keep the rest covered.
Variations
Lemon drizzle cupcakes: While the cakes are still warm, mix 30 g (2 tbsp) caster sugar with 15 ml (1 tbsp) lemon juice. Prick each top a few times with a cocktail stick and spoon a little drizzle over it. Let the cakes cool completely before adding a thinner layer of buttercream, or skip the icing for a more sharply citrusy, less rich finish.
Blueberry lemon cupcakes: Fold 100 g (about ⅔ cup) fresh blueberries into the finished batter just before portioning. Pat washed berries dry first and toss them with a teaspoon of the measured flour to help distribute them. The fruit adds juicy pockets and can make the centres take a few extra minutes to bake, so check each cake with a skewer.
Lemon and poppy seed: Stir 1 tbsp (9 g) poppy seeds into the dry ingredients. They add a gentle crunch and a familiar bakery-style look without changing the lemon flavour much. The recipe does not need extra liquid for this amount.
Less sweet topping: Use a thin lemon glaze instead of buttercream by mixing 100 g (¾ cup) icing sugar with 15–20 ml (1–1½ tbsp) lemon juice. Drizzle it over completely cool cupcakes and leave it to set for about 20 minutes. The glaze is sharper and lighter, but it will not make the same thick piped swirl as buttercream.
Gluten-free option: Use a 1:1 gluten-free self-raising flour blend that includes raising agents, following the packet guidance. Different blends absorb liquid differently, so if the batter seems unusually stiff, add another teaspoon of milk. The texture may be slightly more delicate; cool the cakes fully before lifting or icing them.
Storage and Reheating
Because the buttercream contains butter, store the cupcakes in a covered container in the fridge if they will not be eaten within a couple of hours. Refrigerate them within 2 hours of serving or decorating, and keep them for up to 3 days for the best texture. Before serving, let them stand at room temperature for about 30–45 minutes so the sponge and icing soften. Do not microwave an iced cupcake: the buttercream can melt unevenly and the cake can turn rubbery.
Uniced cupcakes can be kept in an airtight container at room temperature for up to 2 days, provided the room is cool. For longer storage, freeze the completely cooled, uniced cakes in a freezer-safe container for up to 2 months. Thaw them in their container at room temperature for about 1–2 hours, then ice once fully thawed. Iced cupcakes can also be frozen, but the decoration may lose its neat shape; freeze them uncovered until firm, then cover carefully. Thaw in the fridge and bring to room temperature before serving.
Frequently Asked Questions
Can I make these lemon cupcakes without an electric mixer?
Yes. Use very soft butter and beat it with the sugar using a sturdy wooden spoon until noticeably lighter and creamy, then add the eggs one at a time. Fold in the flour by hand rather than trying to beat it vigorously. The method takes more effort, but it works well if the butter is soft enough to mix smoothly.
Why did my cupcakes sink in the middle?
The most common reasons are opening the oven door too early, using too much raising agent, or taking the cakes out before the centres are baked. Keep the door closed for at least the first 15 minutes, measure flour and baking powder accurately, and check the centre with a skewer before removing the tin. Also avoid overfilling the cases, as very full cakes can rise and then collapse.
Can I use bottled lemon juice?
Fresh juice is best here because the recipe also uses fresh zest, and bottled juice can taste flatter or more acidic. If bottled juice is what you have, use the same measured amount for the cake and icing, but do not omit the zest if fresh lemons are available. Bottled juice cannot replace zest because most of the fragrant lemon oils come from the peel.
Can I prepare the batter ahead?
It is better to bake the batter soon after mixing because the raising agents begin working once they are combined with liquid. For a head start, weigh the dry ingredients and prepare the paper cases in advance, then mix and bake when ready. You can also bake the cupcakes a day ahead and store them uniced in an airtight container, adding the buttercream once they have cooled.
How do I know the cupcakes are fully baked?
The tops should be lightly golden and spring back when gently pressed, while a skewer inserted into the middle should come out clean or with a few dry crumbs. A wet streak of batter means they need another 2–3 minutes. If using a food thermometer, check the centre of a cupcake; the USDA FSIS safe minimum for egg dishes is 71°C (160°F).
Can I make the cupcakes dairy-free?
Use a plant-based block suitable for baking in place of both the cake butter and buttercream butter, and choose an unsweetened plant milk for the cake. A baking block generally gives a firmer result than a soft tub spread, which can contain more water. Check that the products are suitable for your dietary needs, and expect a slightly different flavour and icing texture.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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