Pai Ubi Jalar Gulungan Kayu Manis dengan Frosting Meringue Kocok Mentega.

Bahan-bahan (6 porsi)

• 2 1/4 teaspoons active dry yeast
• 1/4 cup warm water
• 2 tablespoons light brown sugar
• 4 tablespoons (1/4 cup) unsalted butter, melted
• 1/2 cup warm milk
• ½ cup mashed sweet potato puree
• 1 egg
• 3 1/2 - 4 cups all-purpose flour
• 1/4 teaspoon salt
• ¼ teaspoon nutmeg
• toasted pecans, chopped, for topping
• ½ cup granulated sugar
• 1 tablespoon cinnamon
• 6 tablespoons butter, softened
• 2 eggs whites
• 1/3 cup granulated sugar
• 6 tablespoons unsalted butter, softened
• 1 teaspoons vanilla extract
• pinch of salt