
These soft, fluffy bao pies are filled with a savory chicken mixture seasoned with yellow bean sauce, hoisin, and chili oil. Steam them until pillowy, then pan-crisp the outside for extra texture and serve as a satisfying snack, lunch, or shareable dinner.
Make the dough: In a large bowl, combine the flour, baking powder, yeast, and salt. Pour in the warm water and mix until a rough dough forms. Knead on a lightly floured surface for 15 to 20 minutes, or until smooth and elastic. Transfer to a lightly oiled bowl, cover, and let rest in a warm place for 20 minutes.
Cook the filling: Heat the vegetable oil in a frying pan over medium heat. Cook the onion for 5 to 6 minutes until softened, then stir in the garlic and cook for 30 seconds. Add the chicken mince, yellow bean sauce, hoisin sauce, chili oil, and dark soy sauce. Cook for about 10 to 15 minutes, breaking up the meat, until the chicken is fully cooked and the mixture is thick. Set aside to cool completely.
Give the dough a second rise: Knead the rested dough for 5 minutes until smooth again, then return it to the bowl. Cover and leave for another 20 minutes, until slightly puffed and springy when pressed.
Shape the wrappers: Divide the dough into 12 equal pieces and roll each piece into a ball. Keep them covered with a clean towel so they do not dry out. Flatten one ball into a disc, then roll from the center outward, turning as you go, until you have a round about 8.5 cm wide. Repeat with the remaining dough.
Fill and seal the bao pies: Place one dough round in your hand and spoon a generous amount of cooled filling into the center. Top with a second dough round and press the edges together firmly to seal. Set each pie on a small strip of parchment paper. Repeat until all 6 pies are assembled.
Proof and steam: Arrange the pies in a steamer, leaving space between them. Set the steamer over warm water, off the heat, and let the pies rise for 10 minutes. Then place the steamer over medium heat and steam for 10 minutes. Turn off the heat and let the pies rest in the covered steamer for 2 to 3 minutes before removing.
Finish and serve: Serve the bao pies as they are, or crisp them in a dry nonstick pan for 1 to 2 minutes per side until lightly golden. Top with sliced spring onions and extra chili oil, if desired.
Let the filling cool completely before sealing the bao pies or the dough may soften and tear. Roll the dough evenly and avoid making the edges too thin. Leftovers keep well in the refrigerator for up to 3 days and can be reheated by steaming or pan-heating.