1 cup granulated sugar plus 2 tablespoons, divided
1/2 teaspoon kosher salt
1 teaspoon Meyer lemon zest
4 large eggs, yolks and whites separated
1/2 teaspoon cream of tartar
1/2 teaspoon vanilla
1/3 cup water
1/2 cup plus 2 tablespoons melted butter, divided
Instructions
Slice bananas into 1/4-inch-thick rounds.
In a large bowl, sift together cake flour, baking powder, 1/2 cup sugar, and salt. Mix in lemon zest.
In the bowl of an electric mixer fitted with the whisk attachment, beat the egg whites with the cream of tartar until it becomes frothy, and soft, fluffy peaks begin to form. Gradually add 1/2 cup sugar and beat until you have soft peaks. Slowly add the egg yolks, vanilla and water and beat until just combined.
With the mixer on low speed, gradually add the flour mixture to the batter, followed by 1/2 cup melted butter.
Divide the batter into the baking cups, place baking tray in oven, and bake for about 18-20 minutes or until the cakes are golden, springy to the touch and a toothpick inserted in the center comes clean.