This scrumptious Lemon Curd Layer Cake is as pretty as it is delicious. Lemon Curd Layer Cake Serves: Makes 1 (9-inch) cake Ingredients 1¼ cups unsalted butter, softened 2½ cups sugar 4 tablespoons lemon zest 5 large eggs, room temperature 1¼ teaspoons vanilla extract 3¾ cups unbleached cake flour 1¾ teaspoons baking powder ½ teaspoon