Preheat the oven to 190C/385F degrees.
In a bowl cream the butter and erythritol together until smooth.
Add the eggs and beat thoroughly.
Add the coconut flour, cocoa powder, salt and baking powder. Mix well.
Add the coconut milk and combine until smooth.
Grease/butter a pudding dish (the one I used was 6 inches x 10 inches).
Spoon the pudding mixture into the dish and smooth evenly.
Poke the blackberries into the pudding mixture, evenly.
Bake for 30 minutes until firm.
Serve and enjoy!