01 - Preheat oven to 350°F. Grease and line a 9×5-inch loaf pan with parchment paper.
02 - In a large bowl, whisk together yogurt, eggs, vegetable oil, lemon zest, lemon juice, and vanilla extract until smooth.
03 - Sift flour, baking powder, baking soda, salt, and sugar in a separate bowl.
04 - Gently fold dry ingredients into wet mixture until just combined; avoid overmixing.
05 - Toss blueberries with 1 tablespoon flour to prevent sinking, then fold gently into the batter.
06 - Pour batter into prepared pan and smooth surface. Bake for 45–55 minutes or until a toothpick inserted in center comes out clean.
07 - Allow loaf to cool in pan for 10 minutes; transfer to wire rack and cool completely.
08 - Whisk powdered sugar and lemon juice until smooth. Drizzle over cooled loaf before slicing, if desired.