01 - Preheat oven to 350°F. Line two baking sheets with parchment paper for easy cleanup and to prevent sticking.
02 - Whisk flour, baking powder, baking soda, and salt in a medium bowl until thoroughly blended. Set aside for later use.
03 - Beat softened butter and granulated sugar with electric mixer on medium-high speed until light and fluffy, approximately 2–3 minutes.
04 - Add egg to butter mixture, beating well. Mix in ricotta cheese, lemon juice, lemon zest, and vanilla extract until completely smooth.
05 - Gradually add dry ingredients to wet mixture, mixing on low speed until just incorporated. Avoid overmixing to maintain tender texture.
06 - Drop rounded tablespoons of dough onto prepared baking sheets, leaving approximately 2 inches of space between each cookie to allow for spreading.
07 - Bake for 13–15 minutes until edges are lightly golden and centers are set. Remove from oven when tops appear slightly dry.
08 - Let cookies rest on baking sheets for 5 minutes to firm slightly, then transfer to wire rack to cool completely before glazing.
09 - Whisk powdered sugar and lemon juice in small bowl until smooth and pourable. Adjust consistency with additional juice if necessary.
10 - Drizzle glaze generously over cooled cookies using spoon. Sprinkle with additional lemon zest if desired. Allow glaze to set before serving.