Method
1. Pre-heat oven - 175°C
2. Prepare a clean loaf pan
3. Add unsalted butter, granulated sugar and vanilla extract to a clean large mixing bowl
4. Cream until pale and light
5. Add egg to the batter one by one while mixing
6. Add all purpose flour, salt and baking powder to a clean medium bowl
7. Whisk briefly until combined
8. Transfer dry ingredients to batter bit by bit while mixing
9. Add blueberries to a clean small bowl
10. Transfer fruit to batter
11. Mix gently until combined
12. Pour batter into loaf pan
13. Bake until skewer tests clean - 45 min, 175°C
14. Let cool - approx 30 min
15. Turn out onto cooling rack