01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, baking soda, and salt.
03 - In a large bowl, beat butter and sugar with electric mixer until light and fluffy, about 2-3 minutes.
04 - Add egg and beat until well combined.
05 - Mix in ricotta cheese, lemon juice, lemon zest, and vanilla extract until smooth.
06 - Gradually add dry ingredients to wet ingredients, mixing on low speed until just combined. Avoid overmixing.
07 - Drop rounded tablespoons of dough onto prepared baking sheets, spacing 2 inches apart.
08 - Bake for 13-15 minutes until edges are lightly golden and centers are set.
09 - Let cookies cool on baking sheets for 5 minutes, then transfer to wire rack to cool completely.
10 - Whisk powdered sugar, lemon juice, and lemon zest in small bowl until smooth and pourable.
11 - Spoon or drizzle glaze over cooled cookies. Allow glaze to set before serving.