Mix glutinous rice flour, corn starch, baking powder, and salt in a bowl.

In a large bowl, whisk together milk, egg, and melted butter until smooth.

Add the dry ingredients to the wet mixture and combine using a spatula.

Shape the dough into small balls using your hands.

Let the dough rest at room temperature for 30–40 minutes to enhance texture.

Preheat the oven to 170–175°C (340–350°F).

Insert cheese into the rested dough balls and reshape them.

Divide the dough into 13 equal portions (approximately 42g each) and shape them into balls.

Place the balls on a parchment-lined baking tray and lightly flatten them. Brush or spray water on the surface.

Bake at 170–175°C for 30 minutes until the surface is golden and cracked.