Preheat your oven to 350°F (175°C). Grease and line a loaf pan with parchment paper for easy removal.
In a bowl, whisk together the flour, baking powder, and salt. Coat the blueberries with 1 tablespoon of flour to prevent them from sinking.
In a separate bowl, beat the butter and sugar until light and fluffy. Add eggs one at a time, mixing well. Stir in vanilla extract, lemon zest, and lemon juice.
Alternate adding the dry ingredients and milk to the butter mixture, stirring until combined. Gently fold in the blueberries.
Pour the batter into the prepared loaf pan and bake for 50–55 minutes, or until a toothpick inserted in the center comes out clean. Let it cool, then drizzle with the lemon glaze.