INGREDIENTS
For the Cake
2 1/4 cups
cake flour (I used Swan’s Down brand)
1 tbsp
baking powder
1/2 tsp
kosher salt
1 1/4 cups
buttermilk, room temperature
4
large egg whites, room temperature
1 1/2 cups
sugar
lemon zest from two lemons (finely grated)
1 stick
unsalted butter, at room temperature
1 tsp
pure vanilla extract
For the Filling
1 cup
lemon curd
7
-Minute Frosting
1 1/2 cups
plus 2 tablespoons sugar
2/3 cup
water
2 tbsp
light corn syrup
6
large egg whites, room temperature