Preheat oven to 350 F. Prepare baking sheet with parchment paper.

In a medium bowl combine buckwheat flour with baking powder. Set aside.

In another bowl beat butter with coconut sugar until smooth and fluffy using electric mixer, add tahini and mix, add egg. Mix all ingredients until incorporated well.

Add dry ingredients to wet and mix with electric mixer until all ingredients will combine well.

Using ice cream scoop make about 15 - 19 balls. Flatten with fork or knife. (Optional) Sprinkle with chia seeds.

Bake for 12 - 15 minutes. Remove from oven and cool off completely. Drizzle with white chocolate if desired but not necessary.