01 -
Set your oven to 350°F (180°C) to preheat, and line a muffin tin with 12 paper liners. Make sure your cold ingredients are sitting out to reach room temperature.
02 -
Grab a small bowl, toss in the sugar, and rub the lemon zest into it with your fingers. Keep at it until it feels a bit like damp sand. This makes sure all the zest's flavor goes into your cupcakes.
03 -
Dump the cake flour, zest-infused sugar, baking powder, salt, and pistachios into the bowl of your stand mixer. Give it a quick whisk to mix. Add the softened butter and stir on low speed for about 3 minutes until it looks crumbly and sandy.
04 -
In another bowl, mix together the sour cream, milk, vegetable oil, egg, vanilla extract, and lemon juice. Stir until smooth and no streaks are left.
05 -
Pour the wet mixture into the sandy dry ingredients. Mix for a few seconds until the batter just starts to come together. Stop, scrape down the bowl, then stir again until smooth. Don’t overdo it!
06 -
Use a scoop to fill each liner in your muffin tin about 3/4 full with batter. Pop them into the oven for 15-20 minutes. Check them around 15 minutes using a toothpick—it should come out with a few moist crumbs. Let them cool in the pan for 5 minutes before moving to a cooling rack.
07 -
In a medium saucepan, combine the raspberries, sugar, and lemon juice over medium heat. Let it simmer for 10-12 minutes, stirring and mashing the berries occasionally. Mix the cornstarch and water in a little bowl, and add this to the bubbling raspberry mix. Cook another 1-2 minutes until thick. Set it aside to cool.
08 -
Put the softened butter into a large bowl and beat it until smooth. Gradually add the powdered sugar, stirring until combined. Pour in the cream, lemon juice, and zest, then beat on high speed for 2-3 minutes until fluffy and airy.
09 -
Take the cooled cupcakes and use a small knife or cupcake corer to cut a hole in the middle of each (a bit over an inch deep). Spoon in raspberry filling. Pipe a wreath of lemon buttercream around the top and finish with a bit more jam in the middle. Sprinkle on pistachios and pop a raspberry on top for style!