01 - Preheat oven to 350°F. Line two baking sheets with parchment paper and set aside.
02 - Whisk together flour, baking powder, baking soda, and salt in a medium bowl until well incorporated.
03 - Beat softened butter and granulated sugar with an electric mixer on medium speed until light and fluffy, approximately 2-3 minutes.
04 - Add the egg and mix thoroughly. Blend in ricotta cheese, lemon juice, lemon zest, and vanilla extract until the mixture is completely smooth.
05 - Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed until just combined. Avoid overmixing to prevent tough cookies.
06 - Drop rounded tablespoons of dough onto the 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 done.
08 - Let cookies rest on baking sheets for 5 minutes, then transfer to a wire rack to cool completely before glazing.
09 - Whisk powdered sugar and lemon juice together until smooth and pourable. Add additional lemon juice 1 teaspoon at a time if too thick.
10 - Drizzle glaze over completely cooled cookies. Sprinkle with additional lemon zest if desired. Allow glaze to set for 15-20 minutes before serving.