Mix the slightly seasoned oats, cocoa powder, sweetener, salt, and baking powder together.
Add 35g of yogurt and mix until crumbly.
Add 18g of yogurt and combine to form a dough.
Add chocolate pieces.
(Brush a little milk on top) Preheat oven to 170°C for 5~10 minutes.
Bake at 170°C for 10~15 minutes.