2 tablespoons unsalted butter, melted, for brushing pan
5 large eggs, separated
3/4 cup sugar, divided
3/4 cup extra-virgin olive oil (I used Meyer lemon olive oil http://bit.ly/70HNhp )
1 tablespoon grated Meyer lemon zest plus 3 tablespoons Meyer lemon juice
1 cup cake flour (not self-rising)
1/2 teaspoon salt
FOR FILLING (and if you feel like cheating here, just use lemon pudding and add zest and juice to jazz it up)
1/2 cup plus 1 tablespoon sugar
3 tablespoons all-purpose flour
1/2 teaspoon salt
1 teaspoon grated Meyer lemon zest plus 3/4 cup Meyer lemon juice
1 large egg yolk
1 tablespoon unsalted butter
1 cup (2 sticks) unsalted butter, room temperature
2 1/2 cups powdered sugar
I can of unsweetened coconut milk for reducing (see below), room temperature
Seeds scraped from 1 split vanilla bean or 1 1/2 teaspoons vanilla extract
1/8 teaspoon salt
1 1/2 cups sweetened flaked coconut
Start with the filling and the reduced coconut milk so that they have time to cool while the cupcakes are baking.
*To make filling:* Whisk together sugar, flour, and salt in a small
heavy saucepan, then add lemon juice in a slow stream, whisking until
combined. Bring to a boil, whisking constantly, then simmer, whisking,
until thickened, about 3 minutes. Remove from heat.
Whisk yolk in a small bowl, then add about one fourth of lemon-juice
mixture, whisking vigorously. Whisk into remaining lemon-juice mixture
and gently boil, whisking, 1 minute. Remove from heat and stir in
butter and zest. Chill until cool, at least 30 minutes.
*To make reduced coconut milk:* Bring coconut milk to boil in a
saucepan over medium-high heat (coconut milk will boil up high in pan).
Reduce heat to medium-low; boil until reduced to 3/4 cups, stirring
occasionally, 25 to 30 minutes. Remove from heat; chill (coconut milk
will settle slightly as it cools).
*To make frosting:* Using electric mixer, beat butter in large bowl
until smooth. Add sugar, 1/3 cup reduced coconut milk, seeds from
vanilla bean, coconut flakes, and salt. Beat on medium-low speed until
blended, scraping down sides of bowl. Increase to medium-high and beat
until light and fluffy (it will turn white or close to white as you
*To make cupcakes:* Preheat oven to 325º with rack in the middle. I
used two large muffin pans each with 6 muffin cups. Line with each cup
with paper liner (no need to grease).
Beat together yolks and 1/2 cup sugar in a large bowl with an electric
mixer at high speed until pale and thick, about 3 minutes. At medium
speed, beat in oil and lemon zest and juice until just combined (I used
extra lemon zest because I wanted my cupcakes VERY lemony). Sift in
flour and mix at low speed until just combined.
Beat whites with salt in another large bowl with cleaned beaters at
medium-high speed until foamy, then add remaining 1/4 cup sugar a
little at a time, beating, and continue to beat until whites just hold
soft peaks. Gently fold one third of whites into yolk mixture to
lighten, then fold in remaining whites gently but thoroughly. Transfer
batter to muffin tins, filling to top, and gently rap against counter
once or twice to eliminate any air bubbles. Bake until golden brown
(top may crack slightly) and a wooden pick inserted in center of
cupcakes comes out clean, 30 to 40 minutes (depending on your oven).
Allow to cool completely before injecting lemon filling, which can be
done with a piping bag with a small tip. Just slide tip into top of
cupcake and gently squeeze a small amount of filling in.
Garnish with coconut flakes and Meyer lemon slices.