Preheat the oven to 180 fan
Mix the flaxseed with 6 tbsp of hot water, leave to rest and thicken
Melt the coconut oil and chocolate together
Mix the flour, baking powder and sugar in a large bowl
Add the flaxseed mix to the flour bowl, beat together
Add the melted chocolate and coconut oil the the large bowl, beat together
Pour the mix into a prepared tin and bake for 25-30 minutes