Wash and dry the lemon, then zest it finely.
Rub the lemon zest together with the sugar between your fingers to distribute the lemon oils in the sugar.
Add all of the cookie ingredients to a mixing bowl. Mix the ingredients together with an electric mixer until the dough has come together completely. It ends up being like a sticky sugar cookie dough consistency. It will be sticky so you'll need to flour your working surfaces later.
Once the dough is mixed, I transferred the dough to a large silicon baking mat. Dust some flour on the work space, and then roll the dough flat to 35-50 mm thickness. Then place the dough in the fridge to stiffen for about 30 minutes.
Prepare two baking sheets, and preheat the oven to 180°C.
Once the dough has chilled, use a cookie cutter or a glass and cut out circular cookie shapes in the dough. Remove the excess dough and set aside for the next batch of cookie circles, chilling the dough again if needed.
Place one teaspoon of lemon curd on each cookie round. Then grab 3 corners and pinch the corners together to make a triangular pocket shape of each cookie. Then dab the poppy seeds on each cookie and press the seeds gently into the dough.
Bake the cookies for about 14 minutes. They are done baking when the bottom has gained a bit of golden colour.
Roll the rest of the dough out and repeat the process while the other cookies are baking.
Let the cookies cool before enjoying as the filling becomes very hot!
Store any leftovers in an airtight container. Enjoy!