Ingredients
For the Cake:
3 cups cake flour
2 cups sugar, scant
4 1/2 teaspoons baking powder
1/2 teaspoon salt
1 vanilla bean, split and scraped
1 cup plus 2 tablespoons unsalted butter,
at room temperature, cut in small pieces
1 1/3 cups milk, divided
5 egg whites
1 tablespoon vanilla extract
For the Frosting:
1 1/2 cups plus 2 tablespoons unsalted butter, at room temperature
1 1/2 cups dulce de leche, divided
3 1/4 cups powdered sugar, sifted
1 teaspoon vanilla extract
pinch salt
Preparation
