Preheat the oven to 180°C (356°F).
Mix brown rice flour, glutinous rice flour, mugwort powder, baking powder, and salt together in a bowl.
Add coconut oil and soy milk, and knead into a dough.
Divide the dough into bite-sized pieces and place them on a baking tray.
Bake in the preheated oven for 20 minutes.