01 -
Gently melt the butter using a microwave or saucepan over low-medium heat, taking care not to let it bubble. Transfer the melted butter to a large mixing bowl and refrigerate until cooled to room temperature, about 20 minutes.
02 -
In a separate bowl, combine granulated sugar and lemon zest. Use your fingers to rub the mixture together until the sugar appears moist and fragrant.
03 -
Add the cooled butter to the lemon sugar and whisk together for one minute using a spatula or a stand mixer with the paddle attachment.
04 -
Add the egg and vanilla extract to the mixture, stirring until fully combined.
05 -
In a new bowl, whisk together flour, baking powder, baking soda, poppy seeds, and salt.
06 -
Add the dry mixture to the wet ingredients and fold together with a spatula until a uniform dough forms.
07 -
Use a 2-tablespoon (approx. 53 g) cookie scoop to form 11 dough portions. Roll each into a ball and place on a baking tray lined with baking paper. Refrigerate for 30 minutes.
08 -
Preheat the oven to 180°C. Line a baking sheet with parchment paper.
09 -
Arrange 6 cookies on the prepared baking sheet, leaving the remainder in the fridge. Bake each batch for 10–11 minutes. Repeat with remaining dough.
10 -
Let cookies cool on the tray for 3 minutes, then transfer to a wire rack to cool completely.
11 -
In a bowl, beat together cream cheese, vanilla extract, powdered sugar, agave or honey, and heavy cream with an electric mixer until stiff peaks form. Cover and refrigerate if preparing ahead.
12 -
Transfer the frosting to a piping bag fitted with a round tip. Pipe frosting in a spiral onto cooled cookies. Sprinkle with poppy seeds and adorn with lemon slices if desired.