Aedan's Lemon Surprise Birthday Cake (or Cupcakes)
I've made different versions of this over the years, at Aedan's request. It works great as a layered cake or as cupcakes!
Thick Lemon Curd (can be made days ahead)
(Makes approx. 1.5 cups) from www.loveandoliveoil.com/
3 Tbsp lemon zest
» To Make lemon curd:
- In a bowl, rub lemon zest into granulated sugar to release the flavorful oils. Whisk in cornstarch and salt until evenly incorporated.
- Transfer to a medium, heavy-bottomed saucepan set over low heat. Whisk in egg and egg yolks until it forms a thick paste, then whisk in lemon juice until smooth.
- Continue to whisk regularly over low heat until the mixture starts to thicken. You can switch to a spatula at any point if you like. Continue to cook until curd reaches 170ºF and thickens enough that you can swipe your spatula through it and it will not fill in for at least 3-5 seconds.
- Remove from heat and whisk in butter, one piece at a time, whisking until fully melted and incorporated before adding the next.
- Strain through a fine mesh sieve to remove the zest and any bits of cooked egg (this will give you a beautifully smooth texture).
» To make the Cake OR Cupcakes:
- Preheat the oven to 350°F/170°C. Lightly grease two 8-inch round cake pans with butter or baking spray and line the bottoms with parchment paper. Wrap the outside of the cake pans with soaked fabric baking strips, if you’d like. (This produces flat cake layers!) OR prep cupcake pan with liners
- In a medium mixing bowl, whisk together the flour, baking powder, baking soda, and salt.
- In a large mixing bowl or the bowl of a stand mixer fitted with the paddle attachment, beat the butter on medium speed until creamy. Add the sugar and lemon zest and beat until light and fluffy, about 5 minutes. Add the eggs one at a time, scrape down the bowl between additions, and beat until well combined and fluffy.
- In a liquid measuring cup, stir the buttermilk, lemon juice, and vanilla together.
- With the mixer on low speed, add a third of the flour mixture followed by half of the buttermilk mixture. Continue, alternating between the flour and buttermilk, mixing just until combined. Stop and scrape down the bowl occasionally. Divide the batter among the prepared cake pans. OR Fill cupcake liners 2/3.
- Bake for 35 to 40 minutes or until the center of the cakes are springy to the touch and the sides are just starting to pull away from the pan. OR Bake for 12 minutes and check center of one with a toothpick when you think they are done. Let the cakes cool in the pan for 15 minutes then invert or remove and cool completely on a wire rack.
6 large egg whites (approx. 180g)
2 cups granulated sugar (approx 400g)
1 and 1/2 cups unsalted butter, softened but still cool to the touch and cut into Tbsp size pieces (approx 60°F)
2 teaspoons pure vanilla extract or 1 packet Vanilla Zucker
1 vial of Dr. Oetkers Citron Aroma (https://www.coop.ch/de/lebensmittel/vorraete/backzutaten/klassische-backzutaten/fruechte-aromen/dr-oetker-zitrone-aroma-4-stueck/p/3030228)
1/8 teaspoon salt



