01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, baking powder, and salt. Set aside.
03 - In a large bowl, beat butter, granulated sugar, and lemon zest together until light and fluffy, about 2 minutes.
04 - Add eggs one at a time, beating well after each. Mix in lemon juice and vanilla extract.
05 - Gradually add the dry ingredients to the wet mixture, mixing just until combined.
06 - Gently fold in blueberries with a spatula, being careful not to crush them.
07 - Drop rounded tablespoons of dough onto prepared baking sheets, spacing about 2 inches apart.
08 - Bake for 11-13 minutes, or until edges are just set and centers look soft. Do not overbake.
09 - Cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
10 - Once cooled, dust with powdered sugar if desired.