Mix bread flour, butter, milk powder, yeast, and egg with water until the dough is smooth and non-sticky.
2.
Divide the dough into 8 portions, place into the [product]"Turbo Convection" Air-Fry Microwave Steam Grill Oven[/product], and let rest for 1 hour using the low-temperature ferment mode.
3.
To make the pineapple crust: add butter to flour and knead well. Then add milk and egg, knead again until smooth.
4.
Flatten into round crust shapes and place each one on top of the fermented bun dough.
5.
Brush egg wash over the pineapple crust, place into the oven, and bake at 180°C for 20 minutes. Ready to serve.
**Information provided is for reference only. Actual cooking time and temperature are subject to food portion and personal preference