In a bowl, pour in water, stir in sugar, sprinkle with yeast, let stand for 10 mins

In a pot, stir blueberries and sugar, on med heat, until sugar dissolved, then stir in cornstarch water, bring to boil til thickened, stirring often. Set aside to cool

In a bowl, mix flour, sugar, and salt, make a well in center. Pour in activated yeast, knead. Cover bowl and let dough doubled in size

Divide dough into portions, flatten, then fill center with blueberry pie filling. Shape into rounds.

Preheat your steamer

Steam buns for 15-20 mins