Lemon Cupcakes with Raspberry Buttercream Frosting Recipe
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Lemon Cupcakes with Raspberry Buttercream Frosting are the bake I make when I want something bright on the table without turning the whole afternoon over to it. The cupcake is tangy from fresh lemon juice and zest, and the frosting gets its color and flavor from real raspberries you cook down yourself, not from a bottle.
After years of baking with fruit, I’ve learned the raspberry reduction is the part that decides whether this works. Take it far enough on the stove and the buttercream pipes into clean swirls. Rush it, and you get a lovely flavor that slides off the cupcake.
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Why You’ll Love This Recipe
- The lemon comes from two real lemons, juice and zest both, so the flavor is fresh and sharp rather than the flat sweetness you get from extract alone.
- The frosting is colored and flavored entirely by a raspberry reduction you make from fresh berries, which means no artificial color and a genuine berry tartness against the sweet.
- One bowl for the dry, one for the wet, and a saucepan for the reduction, so the cleanup is manageable on a normal afternoon.
- They hold at room temperature for a couple of days, which makes them a sensible bake to take to a picnic, an Easter table, or a birthday you’re baking ahead for.
Ingredients You’ll Need
You’ll need all the ingredients shown in the photograph below.
- Lemons. You need two large lemons for a quarter cup of juice plus the zest of both. Zest before you juice, and take only the yellow, not the white pith underneath, which is where the bitterness lives.
- Fresh raspberries. A cup and a half goes into the frosting, blended and sieved to lose the seeds, then reduced. Fresh is what the recipe is written for. Frozen berries carry more water, so if that’s what you have, expect the reduction to take longer to thicken.
- Buttermilk. Half a cup keeps the crumb tender and adds a faint tang that sits well with the lemon. If you don’t keep it in, stir a teaspoon of lemon juice into half a cup of milk and let it sit a few minutes before using.
- Unsalted butter. You need it in two places: half a cup in the cupcakes and another half cup in the frosting, both at room temperature. Cold butter won’t cream properly, and it’s the creaming that gives you a light cupcake and a fluffy frosting.
- Powdered sugar. Two and a half cups build the body of the buttercream. It’s also your lever if the frosting comes out soft; a little more stiffens it.
- Heavy cream. Two tablespoons loosen the buttercream to a pipeable texture after all that sugar goes in.
How to Make Lemon Cupcakes with Raspberry Buttercream Frosting
A complete printable recipe and the measurements in both US customary and metric are available in the recipe card below.
Make the Cupcake Batter
Heat the oven to 350°F and line your pan. Whisk the flour, baking powder, and salt in one bowl. In another, cream the room-temperature butter and the full cup of sugar on medium-high for a minute, then scrape down and add the eggs, vanilla, and all the lemon juice and zest, mixing just to combine.
Bring the Batter Together
On low speed, add the buttermilk and the flour mixture in alternating halves until it’s just combined. Stopping there matters. Once the flour is in, overmixing develops the gluten and gives you a denser, tougher cupcake, so mix until you no longer see dry flour and then stop.
SERIOUSLY GOOD
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Fill and Bake
A one-inch cookie scoop makes this even; put three tablespoons of batter in each liner. Bake for 20 minutes, or until a toothpick in the center comes out clean. Let them cool completely before you frost, because warm cupcakes melt buttercream on contact.
Make the Raspberry Reduction
Blend the raspberries with a splash of water if they need it, then push them through a sieve and discard the seeds. Bring the strained liquid to a low boil for about 10 minutes, stirring now and then, until it’s greatly reduced and thickened.
This is the step that carries the whole frosting, so cook it down further than feels necessary rather than pulling it early. Then chill it in the freezer for at least 10 minutes.
Whip the Buttercream and Frost
Beat the second half cup of butter for a minute, then add the powdered sugar slowly. Scrape down, add the heavy cream and a pinch of salt, and beat another minute. Add two tablespoons of the cooled raspberry reduction and beat until light and fluffy. Pipe onto the cooled cupcakes.
Recipe Notes and Expert Tips
- Reduce the raspberries more than you think you should. A thin reduction is the single reason this frosting turns out too soft to pipe. You want it thick and jammy in the pan, not pourable.
- Add the reduction cold and in stages. Warm fruit softens the butter and slackens the whole bowl. Chill it fully, then add it two tablespoons at a time so the buttercream has a chance to take it up.
- If it’s still too soft, add more sugar. A few more spoonfuls of powdered sugar will stiffen a loose buttercream; a short spell in the fridge before you re-whip helps too.
- Cool the cupcakes fully before frosting. Any residual heat and the first swirl slides straight off. If you’re short on time, the freezer speeds the cooling.
Recipe Variations
- Swapping the raspberries for the same weight of strawberries gives a milder, sweeter frosting with less tartness against the lemon. It’s a supported change that keeps the same method, since both berries strain and reduce the same way, though strawberries run a little sweeter so you may want slightly less powdered sugar.
- For a plain lemon buttercream, leave the reduction out entirely and beat in an extra teaspoon of lemon juice instead. That’s untested here, and it will change the frosting’s color and moisture, so add the juice slowly and watch the texture rather than treating it as a straight swap.
- You can turn the same batter into a single layer by baking it in an eight-inch round instead of liners. I’d treat the bake time as untested at that size and start checking early with a toothpick, since a filled pan takes longer than shallow cupcakes.
How to Store Leftovers
These are best the day they’re made, but they keep well. Store the frosted cupcakes in an airtight container at room temperature for up to two days, or in the fridge for up to five; bring refrigerated cupcakes back to room temperature before serving so the frosting softens.
The buttercream is stable at room temperature because of its high sugar content, so a covered cake stand on the counter is fine for a day or two.
To get ahead, you can bake the cupcakes a day early and keep them unfrosted in an airtight container, and you can make the raspberry reduction ahead and keep it chilled. Frost on the day you’re serving for the cleanest swirls.
What to Serve With Lemon Cupcakes with Raspberry Buttercream Frosting
These sit happily on a spring or summer dessert table alongside other fruit-forward bakes. If you’re building a spread, I’d put them next to a tray of tangy lemon bars to lean into the citrus, or a batch of juicy blueberry muffins if there are children around who’d rather have a muffin than a cupcake.
For something cool to finish, a spoonful of no-bake lemon tiramisu keeps the lemon theme going without another thing to bake.
FAQs
Almost always the reduction wasn’t cooked down far enough, or it went into the butter while still warm. Reduce the strained liquid until it’s thick and jammy, chill it fully, and add it a couple of tablespoons at a time. If it’s already loose, beat in more powdered sugar and chill the bowl before re-whipping.
Yes, though frozen berries hold more water, so the reduction will take longer to thicken. Cook it until it’s thick and jammy rather than going by the clock, since a wetter start needs more time on the heat.
Usually overmixing once the flour goes in. Add the buttermilk and flour in alternating halves and stop as soon as the dry streaks disappear. Make sure your butter and eggs are at room temperature too, since cold ingredients don’t cream to the same volume.
Bake the cupcakes a day early and store them unfrosted in an airtight container, and make the raspberry reduction ahead and keep it chilled. Whip the buttercream and frost on serving day for the best texture and the cleanest swirls.
More Easy Desserts to Bake Next
If this hit the spot, here’s where I’d go next in the same bright, fruit-forward direction:
- Raspberry Lemon Cheesecake Bars. The same sweet-tart raspberry-and-lemon pairing in a creamy, sliceable bar.
- Glazed Lemon Cookies. Soft, chewy, and heavy on the lemon if the citrus is what pulled you in here.
- Boston Cream Pie Cupcakes. For the next time you want a filled, piped cupcake with a completely different flavor.
- Homemade Strawberry Cake. An easy, feel-good berry cake to scale the same fruit idea up to a full cake.
Ingredients
Cupcake Ingredients
- 1 ½ cups all-purpose flour
- 1 ½ teaspoons baking powder
- ½ teaspoon salt
- 1 cup sugar
- 2 eggs
- ½ cup unsalted butter room temp
- 1 teaspoon vanilla
- 2 large lemons ¼ cup juice and the zest of both lemons
- ½ cup buttermilk
Frosting Ingredients
- 1.5 cups fresh raspberries
- 1/2 cup unsalted butter (room temp)
- 2.5 cups powdered sugar
- 2 tbsp heavy cream
- pinch of salt to taste
Instructions
Make the Cupcakes
- Preheat oven to 350°F (180°C). Add cupcake liners to the pan and set aside.
- In a bowl, combine flour, baking powder and salt.1 ½ cups all-purpose flour, 1 ½ teaspoons baking powder, ½ teaspoon salt
- In another large mixing bowl cream together the butter and sugar on medium-high speed for 1 minute. Pause to scrape the bowl, add in the eggs, vanilla, and lemon juice/zest. Mix again just to combine.1 cup sugar, 2 eggs, ½ cup unsalted butter, 1 teaspoon vanilla, 2 large lemons
- On low speed add half the buttermilk and half the flour mixture alternating until fully combined.½ cup buttermilk
- Using a 1-inch cookie scoop, add 3 tablespoons of batter into each cupcake liner and bake for 20 minutes or until a toothpick inserted into the middle comes out clean.
Make the Frosting
- Add raspberries to a blender or food processor. Add a small amount of water if needed.1.5 cups fresh raspberries
- Put the raspberries through a sieve to remove the seeds.
- Add the remaining liquid to a saucepan and bring to a low boil for 10 minutes, stirring occasionally, until greatly reduced and thickened.
- Place the raspberry mixture in the freezer to chill for at least 10 minutes.
- Meanwhile, mix the butter for 1 minute, then slowly add powdered sugar. Scrape the sides, add heavy cream and salt if desired, and mix for another minute.1/2 cup unsalted butter (room temp), 2.5 cups powdered sugar , 2 tbsp heavy cream , pinch of salt
- Add 2 tbsp of raspberry mixture and mix until light and fluffy.
- Transfer frosting to a piping bag and pipe onto cooled cupcakes.
Notes
Nutrition
