Dulce de Leche Cake

INGREDIENTS

• 2 cups cake flour
• 2 tsp. baking powder
• 1 cup sugar
• 1/3 cup canola oil
• 2 tsp. vanilla extract
• 4 eggs, separated
• 1/3 cup plus 2 Tbs. water
• 1/2 tsp. kosher salt
• 1/4 tsp. cream of tartar
• 1 cup dulce de leche
• 1/4 cup heavy cream
• 3 egg whites, at room temperature
• 3/4 cup sugar
• 2 Tbs. light corn syrup
• 1/8 tsp. kosher salt
• 1/3 cup water
• 1 tsp. vanilla extract