Step 1: Preheat your oven to 350°F (175°C). Grease and flour a 9x5-inch loaf pan.
Step 2: In a mixing bowl, whisk together the flour, baking powder, and salt. Set aside.
Step 3: In a separate large bowl, cream together the softened butter and granulated sugar until light and fluffy.
Step 4: Beat in the eggs, one at a time, followed by the lemon zest and lemon juice until well combined.
Step 5: Gradually add the flour mixture to the wet ingredients, alternating with the milk. Begin and end with the flour mixture, mixing just until combined.
Step 6: Toss blueberries in 1 tablespoon of flour. (This step prevents blueberries from dropping downwards to bottom of loaf during baking step.) Gently fold in the coated blueberries, being careful not to overmix.
Step 7: Pour the batter into the prepared loaf pan and smooth the top with a spatula.
Step 8: Bake for 50-55 minutes, or until a toothpick inserted into the center comes out clean.
Step 9: Remove from the oven and let the loaf cool in the pan for 10 minutes before transferring it to a wire rack.