In a large bowl combine buckwheat flour, rice flour, potato starch, yeast, psyllium, flax meal, salt, sugar, and baking powder. Combine and add warm water.
Create a smooth dough. Cover it and let it prove for 1 hour.
After one hour, combine the dough and create 6 medium-sized buns. Transfer them onto a baking pan lined with baking powder. Let it rest for about 30 more minutes before baking.