Grease dish. Melt butter in a pan or microwave, taking care not to allow it to burn. Preheat oven to 180C.
Add 200g flour, baking powder, sugar, vanilla,milk, cinnamon, and melted butter into a bowl and mix well until combined.
Spoon into greased dish and level. In a separate bowl, add frozen blueberries and remaining flour and mix well to cover blueberries. Pour over batter.
Pop into preheated oven at 180C for 25 minutes or until the batter is firm and golden and the blueberries are devilishly bubbling.
Cool before serving. Dust with icing sugar just befor serving. Serve warm or cold. Delicious with custard or whipped cream. Alternatively, spoon over a dollop of plain yoghurt for a healthier alternative. Enjoy.
