Instructions:
- Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
- In a medium mixing bowl, whisk together the flour, baking powder, and salt.
- In a separate mixing bowl, beat the butter, granulated sugar, and powdered sugar until light and fluffy.
- Add the egg yolks, lemon zest, and vanilla extract to the butter mixture and beat until well combined.
- Slowly add the flour mixture to the butter mixture, mixing until just combined.
- Using a teaspoon or cookie scoop, shape the dough into small balls and place them on the prepared baking sheet.
- Use a fork to press down lightly on each cookie to flatten them slightly.
- Bake for 12-15 minutes, or until the edges are golden brown and the center is set.
- Remove the cookies from the oven and allow them to cool for 5 minutes before transferring them to a wire rack to cool completely.
- Once the cookies are cool, dust them with powdered sugar before serving.
