Heat oven to 170°C fan and line a brownie tin with baking paper
Whisk together the eggs, butter and soft brown sugar until well combined
Gently fold in the self-raising flour until just combined then fold through the blueberries
Add 60ml water to loosen the batter if needed
Pour into the prepared tin and smooth the top
Bake for 25-35 minutes, checking from 25 minutes, until golden and a skewer comes out mostly clean
