01 - Preheat oven to 350°F and line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, baking soda, and salt until thoroughly blended.
03 - Beat the softened butter and granulated sugar with an electric mixer on medium-high speed until light and fluffy, approximately 2-3 minutes.
04 - Add the egg to the butter mixture and beat until fully incorporated and smooth.
05 - Mix in the ricotta cheese, lemon juice, lemon zest, and vanilla extract until the batter is smooth and creamy.
06 - Gradually add the dry ingredients to the wet mixture, mixing on low speed just until combined. Take care not to overmix.
07 - Drop rounded tablespoons of dough onto the prepared baking sheets, leaving 2 inches of space between each cookie.
08 - Bake for 13-15 minutes until the edges are lightly golden and the centers appear set.
09 - Let the cookies rest on the baking sheets for 5 minutes, then transfer to a wire rack to cool completely.
10 - Whisk together the powdered sugar, lemon juice, and lemon zest in a small bowl until smooth and pourable.
11 - Drizzle or spoon the glaze over the cooled cookies. Allow the glaze to set before serving.