01 -
In a bowl, whisk together flour, baking powder, and salt.
02 -
Beat butter, granulated sugar, and brown sugar together for about 2 minutes until creamy. Add egg, vanilla, lemon zest, and lemon juice. Beat until combined.
03 -
Slowly mix in dry ingredients and milk. Do not overmix. The dough will be thick and sticky.
04 -
Gently fold blueberries into the dough to prevent them from bursting.
05 -
Cover dough and refrigerate for 30-45 minutes.
06 -
Set the oven to 350°F (177°C) and line baking sheets with parchment paper.
07 -
Scoop dough (1.5 tablespoons each) onto baking sheets, spacing 3 inches apart. Optional: sprinkle with coarse sugar. Bake for 15-16 minutes or until set.
08 -
Let cookies cool for 5 minutes. For the glaze, whisk powdered sugar, lemon juice, and half-and-half until smooth. Drizzle over cookies.