In a large bowl, add in the flour. Create a small well in the flour and add in yeast, baking powder, and sugar.
Slowly add in the water while stirring it with a wooden spoon or hand. Transfer the dough to a working surface with flour sprinkled on.
With a vertical arm press down with your palm and bring it forward and with the other arm, bring it back. Sprinkle on more flour until the dough can slightly stick. Keep kneading until the dough has become smooth, waxy, soft, and bouncy. Divide the dough into 60-65g pieces. If you have extra, divide it amongst the other pieces. Then cover it with a plastic wrap to prevent it from air drying.
With one divided piece, press it into a flat disc with the outer edges thin and in the middle thick.
Stuff the dough with the manapua filling (be sure the filling is at room temperature) and close it on the top while swirling and pinching it. If there is excess dough, pinch it off and it’ll look like a bald head. Set aside and repeat with the other pieces.
***Optional: To have a smoother looking sphere, use a rolling pin. Flatten a piece of dough. Roll it with a rolling pin, fold, and roll. Repeat for 4-5 times then shape it into a circular shape.