Place the flour in a bowl and mix with all the other ingredients up to and including the vanilla.
In a bowl, beat the eggs with all the other ingredients up to and including the oil. Add to the dry ingredients and stir in. Mix in the blueberries. Spoon the mix into the prepared tin. Scatter over the oats and sugar.
for approx. 20 mins. on the bottom shelf of an oven preheated to 200°C. Remove from the oven, allow to cool a little, remove from the tin and leave to cool on a rack.