Good-Cooking - Orange Mango Triple Sec Layer Cake

Ingredients

• 1 cup butter, softened
• 1 3/4 cups granulated sugar, divided
• 1 teaspoon orange extract
• 1 teaspoon orange rind
• 3 cups sifted cake flour
• 2 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1 cup buttermilk
• 8 large egg whites
• 2 mangos, peeled, seeded, and chopped
• 3 tablespoons orange juice
• 3 tablespoons granulated sugar
• 3 tablespoons Triple Sec
• 3/4 cup granulated sugar
• 1/4 cup cornstarch
• 1/8 teaspoon salt
• 1 1/4 cups fresh orange juice
• 2 egg yolks
• 1/4 cup fresh lemon juice
• 1/4 cup butter
• 2 teaspoons grated orange rind
• 1 (16 ounce) package powdered sugar
• 1/2 cup butter, softened
• 1 1/2 teaspoons grated orange rind
• 6 to 8 tablespoons heavy whipping cream