Line a brownie tin with parchment paper- set to one side. Add flour, oats and natvia to a bowl- rub in the coconut oil using your fingers. Stir in coconut and then remove ½ cup of mixture and set to one side.
Add eggs to what’s left in your mixing bowl and stir. Pour mixture into the lined tin and spread out evenly.
Sprinkle over blackberries and then scatter over the remaining mix you placed to one side
Bake for 1 hour but check after 50 minutes.
Remove from the oven and leave to cool completely before cutting. Store in an airtight container in the fridge for up to 3 days.