Preheat the oven to 180°C (356°F).
In a bowl, mix almond flour, baking powder, cocoa powder, and salt.
Add egg, plain yogurt, and oligosaccharide syrup, then knead into a dough.
Finely chop the dark chocolate and mix it evenly into the dough.
Roll the dough out to a thickness of 1.5cm and cut into triangles.
Place the dough pieces on a baking sheet lined with parchment paper.
Bake in the preheated oven at 180°C for 20 minutes.