Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a mixing bowl, cream together the softened butter and powdered sugar until light and fluffy. Add the vanilla extract, lemon zest, and lemon juice, mixing well.
In another bowl, whisk together the flour, cornstarch, and salt. Gradually add the dry mixture to the wet mixture until fully combined.
Drop tablespoon-sized portions of dough onto the prepared baking sheet, spacing them about 2 inches apart.
Bake for 10-12 minutes, or until the edges are lightly golden. Allow to cool on the baking sheet for a few minutes before transferring to a wire rack.
For the glaze, mix together the powdered sugar, lemon juice, and lemon zest in a bowl until smooth. Drizzle over the cooled cookies.
Notes
You can store these cookies in an airtight container for up to a week.
Keyword lemon cookies, meltaway cookies, zesty cookies