In a medium bowl, whisk glutinous rice flour, sugar, and warm water until a soft, smooth dough forms without any lumps or cracks.

Transfer to a lightly floured surface and knead for 2-3 minutes until the dough feels elastic, slightly tacky, and holds together in a smooth ball.

Divide the dough into 12 equal pieces and roll each into a smooth ball using the palms of your hands.

Flatten each ball into a 2-inch disc, place 1 tsp filling in the center, then gently pinch edges to seal completely.

Bring a large pot of water to a gentle boil over medium heat, add rice balls, stirring gently to prevent sticking.

Let rice balls cook for 3-4 minutes or until they float to the surface, indicating they are cooked through.

Use a slotted spoon to remove rice balls and transfer into cold water for 1 minute to firm up, then drain well.

Arrange rice balls on a serving plate, drizzle with honey or sweet syrup and sprinkle toasted sesame seeds for extra flavor.