Zesty Lemon Cookie Sandwiches with Creamy Lemon Curd

Preheat your oven to 350°F (175°C).
In a medium bowl, mix together the flour, powdered sugar, cornstarch, and baking powder.
Add the softened butter, lemon zest, lemon juice, and vanilla extract. Beat until the dough comes together and is smooth.
Roll the dough into small balls (about 1 tablespoon each) and flatten them gently on a baking sheet lined with parchment paper.
Bake for 10-12 minutes, or until the edges are lightly golden.
Let the cookies cool completely on a wire rack.
Assemble the Sandwiches:

Once the cookies have cooled, spread a spoonful of creamy lemon curd on the flat side of one cookie.
Top with another cookie to form a sandwich.
Serve:

For the best texture, chill the cookie sandwiches in the fridge for about 10 minutes before serving. This helps the curd set and gives the cookies a nice, chewy consistency.
Serving and Storage Tips