Ingredients
Method
1.Heat oven to 160C. Grease a 17 x 27cm slice tin and line with baking paper leaving an overhang on all sides.
2.In a bowl, beat butter, sugars and vanilla until pale and creamy. Beat in eggs one at a time, then beat for 1 minute more.
3.Turn mixer speed to low and gradually beat in the flour. Stir in the blueberries.
4.Spread mixture into prepared tin. Bake for 60 minutes or until a skewer inserted in the centre comes out clean. Cool in the tin, then remove and cut in squares. Dust with icing sugar to serve.