01 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan and line with parchment paper, leaving overhang for easy removal.
02 - In a medium bowl, whisk together the flour, baking powder, and salt until evenly distributed.
03 - In a large bowl, massage lemon zest into sugar until fragrant and pale yellow. Whisk in yogurt, vegetable oil, eggs, lemon juice, and vanilla extract until fully incorporated and smooth.
04 - Fold dry ingredients into wet mixture using a spatula until just combined. Avoid overmixing to prevent a tough crumb.
05 - Toss blueberries with reserved flour to coat, then gently fold into batter to prevent sinking and bleeding.
06 - Scrape batter into prepared loaf pan, smoothing the surface with a spatula for even rising.
07 - Bake for 50 to 55 minutes until golden brown and a toothpick inserted in the center emerges clean. Shield with foil if browning accelerates during final 15 minutes.
08 - Rest in pan for 10 minutes, then lift out using parchment sling and transfer to a wire rack to cool completely before glazing.
09 - Whisk powdered sugar with lemon juice to pourable consistency. Drizzle over cooled loaf and allow to set before slicing.