01 - 
                Preheat the oven to 350°F. Line a 9"x5" loaf pan with parchment paper or lightly grease it with butter.
              
              
              
                02 - 
                In a medium bowl, whisk together the flour, baking powder, and salt. Set aside.
              
              
              
                03 - 
                In the bowl of an electric mixer, blend together the melted butter, granulated sugar, eggs, vanilla extract, lemon zest, and lemon juice until well combined.
              
              
              
                04 - 
                While slowly mixing, add the dry flour mixture and milk in two batches, alternating between the two. Stop mixing once just combined.
              
              
              
                05 - 
                If using fresh blueberries, rinse them and ensure they are slightly moist. Toss the blueberries in 1 tablespoon of flour to prevent sinking during baking.
              
              
              
                06 - 
                Gently fold the flour-coated blueberries into the batter by hand, working quickly to combine without overmixing.
              
              
              
                07 - 
                Pour the batter into the prepared loaf pan. Bake for 55–65 minutes, or until a toothpick inserted into the center of the loaf comes out clean.
              
              
              
                08 - 
                Allow the bread to cool in the pan for 30 minutes. Transfer it to a wire cooling rack placed over a baking sheet.
              
              
              
                09 - 
                In a small bowl, whisk together the melted butter, powdered sugar, fresh lemon juice, and vanilla extract until smooth.
              
              
              
                10 - 
                Pour the glaze evenly over the cooled loaf. Allow it to set for a few minutes before serving.