Lemon Cake with Lemon Cream Cheese Frosting

Ingredients (18)

• FOR THE LEMON CAKE:
• 2 1/4 cups cake flour*
• 1 tablespoon baking powder
• 1/2 teaspoon kosher salt
• 1 1/4 cups low-fat buttermilk
• 4 large egg whites
• 1 1/2 cups granulated sugar
• 2 teaspoons grated lemon zest
• 1 stick unsalted butter
• 1/2 teaspoon pure lemon extract
• FOR THE LEMON CREAM CHEESE FROSTING:
• 8 ounces  cream cheese
• 1 stick unsalted butter
• 2 3/4  cups powdered sugar
• 2 tablespoons freshly squeezed lemon juice
• 1 tablespoon freshly grated lemon zest
• 1 teaspoon pure vanilla extract
• 1/8 teaspoon kosher salt