1cup120g fresh or frozen blueberries plus extra for topping
Glaze:
1cup120g icing sugar
1tablespoon15ml lemon juice
1tablespoon15ml milk
Pinchof salt
Instructions
Preheat your oven to 350 degrees. Butter the short sides of a 9-by-5-inch loaf pan and line it with a piece of parchment paper, letting it hang over the long side.
Sift flour, baking powder, baking soda and salt into a medium bowl.
Stir together sour cream, milk and lemon juice in a small bowl or jug until smooth.
Place the soft butter, oil, sugar, lemon zest and vanilla in a large bowl and beat for about 3 minutes using an electric hand mixer until pale and creamy. Add eggs, one at a time, beating until well combined after each addition and scraping down the sides of the bowl as needed.
Add flour mixture in three parts, alternating with milk mixture. Very gently fold in blueberries with just 3 or 4 folds. Do not over-mix or the whole batter will turn blue if you are using frozen berries.
Spoon the batter into the prepared pan and jiggle the pan to even it out instead of spreading. Poke a few extra blueberries on top into the batter. Bake for 45-55 minutes until a skewer comes out clean. Transfer pan to a rack to cool 10 minutes. Lift the loaf from the pan and cool completely on the rack.
To make the glaze, combine all ingredients and whisk until smooth. Spread over cooled cake and enjoy. This loaf can be stored in an airtight container at room temperature up to 3 days.