01 - Preheat oven to 350°F (175°C). Grease and line a 9x5-inch loaf pan with parchment paper, leaving an overhang for easy removal.
02 - In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
03 - In a large bowl, rub lemon zest into the sugar with your fingers until fragrant. Add oil, eggs, yogurt, lemon juice, and vanilla extract; whisk until smooth.
04 - Add the dry ingredients to the wet mixture and stir gently until just combined—do not overmix.
05 - Toss blueberries with 1 tbsp flour, then gently fold them into the batter.
06 - Pour batter into prepared loaf pan and smooth the top. Bake for 50–55 minutes, or until a toothpick inserted in the center comes out clean. If browning too quickly, tent loosely with foil after 40 minutes.
07 - Cool loaf in the pan for 15 minutes, then lift out and place on a wire rack to cool completely.
08 - For the glaze, whisk powdered sugar and lemon juice until smooth and pourable. Drizzle over cooled loaf. Allow glaze to set before slicing.