Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan with butter or non-stick spray and line the bottom with parchment paper.
In a medium bowl, whisk together the 1 ½ cups of all-purpose flour, baking powder, baking soda, and salt.
In a large mixing bowl, cream together the softened butter and granulated sugar for about 3-4 minutes until light and fluffy.
Add the eggs one at a time, mixing well after each addition. Then mix in the vanilla extract, lemon zest, and lemon juice.
Gradually add the flour mixture to the butter mixture, alternating with the buttermilk, starting and ending with the flour mixture.
Toss the blueberries with 1 tablespoon of flour and gently fold them into the batter.
Pour the batter into the prepared loaf pan and smooth the top.
Bake in the preheated oven for about 55-65 minutes, or until a toothpick inserted into the center comes out clean.
Let the loaf cool in the pan for about 10-15 minutes, then invert it onto a wire rack to cool completely.
Dust the cooled loaf with powdered sugar, if desired, and slice to serve.
Notes
Notes
Store leftovers in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week. You can also freeze slices for up to 3 months.