Preheat oven to 175 and grease a loaf tin
Mix together the flour, baking soda, salt, butter, sugar and eggs. Keep mixing till it’s in a batter like paste.
Add the beaten bananas and vanilla extract into the mixture. Carefully fold the blueberries into the mixture.
Put the mixture in a loaf tin, and place in the centre of the oven. Bake for 30-35 minutes or until a toothpick comes out clean.
Cool in the loaf tin for 10mins before placing it onto a wired rack to cool completely