Preheat the oven to 160°C. In a bowl mix vigorously sugar with vanilla, butter and maple syrup.
Chop the chocolate into small pieces and put them aside. Gradually add to the bowl both types of flour, cacao powder, the egg and chunks of chocolate. Line two baking pans with parchment paper.
Using two tablespoons, make irregular dough balls and arrange them on the parchment paper, making sure there’s place between them. In fact, when in oven, they will expand, assuming the shape of classic biscuits. Bake for about 12 minutes, then turn off the oven, pull out the trays and let the chocolate cookies cool down while still on the trays.
Thus, the inside will remain soft and mushy, while the external part will become crisp and crumbly.
Enjoy with love and gratitude.