Preheat the oven at 180C.
Put the chocolate in the oven to melt.
Mix the flour, cocoa powder, protein powder and baking powder.
Add the yoghurt, agave syrup, sweetener, milk and vanilla extract.
Stir in the melted chocolate.
Put half of the batter in a brownie baking tray. Add the lotus biscuits and put the rest of the batter on top.
Put it in the oven for 15 minutes.
Let it rest for 10 minutes. After that spread the lotus spread on top and add crumbles of lotus biscuits.