Pour buckwheat flour, almond flour and ground chia seed into a mixing bowl. Mix evenly.
Put egg, yogurt, some salt and baking powder into the mixing bowl as well.
Blend all ingredients together until they incorporated well.
Pour batter into the loaf pan.Optionally stick some slices of cheese into it. Then close it up nicely.
Check in with a toothpick if it's baked properly. Insert toothpick into the bread if it comes out dry the bread is ready. If it comes out sticky put it back for another 10 minutes or so. (It always depends on the oven.)
Optionally we may cut a handful of cilantro leaves, whisk it with butter and a pinch of salt for spreading it on the freshly baked bread.