Soft buns filled with creamy taro paste offer a subtly sweet, fragrant treat. A vegetarian, family-friendly bakery snack with fresh, purple appeal.
Peel and cube taro root. Steam on medium heat for 20–25 minutes until completely tender. Mash thoroughly while still warm for a smoother paste.
Combine mashed taro with 3 tbsp sugar, 1 tbsp butter, milk, salt, and vanilla extract in a saucepan. Cook over low heat, stirring continuously, until a creamy, thick paste forms. Let cool completely.
In a mixing bowl, blend flour, instant yeast, remaining sugar, salt, and egg. Pour in warm milk and 1 tbsp melted butter. Knead until dough is elastic—about 10 minutes. Cover and let rise for 1 hour in a warm spot.
Divide risen dough into 8 pieces. Flatten each and place a generous spoonful of taro paste in the center. Seal edges carefully, pinching to prevent leaks.
Arrange buns on a lined tray. Cover and proof for 30 minutes. Brush lightly with milk, bake at 350°F for 18–22 minutes, until golden. Cool slightly before serving for best texture.