Combine dry ingredients - To a medium sized mixing bowl, add the cake flour, baking powder and salt. Use a whisk to combine. Set aside.
Combine wet ingredients - In a separate large bowl, add the sugar and lemon zest. Use clean hands to rub the lemon zest into the sugar. Next, add the melted and cooled butter and vanilla extract and whisk to combine. Then add the eggs and whisk until well combined. Add the juice of 1 lemon and whisk.
Form dough - Pour in the dry ingredients in and use a spatula to mix until a dough forms with no dry ingredients showing. Cover with plastic wrap and chill in the fridge for 2 hours or overnight.
Preheat your oven to160C / 300F (fan off), 180C / 350F (fan on). Line two baking trays with baking paper.
Coat in sugar - Once chilled, use a large scoop (about 3 tbsp) to scoop out 7 cookie balls. Use your hands to roll into balls. Coat in the caster sugar, then coat in the powdered sugar.
Bake - Place on two baking trays and bake for 10 minutes in the middle rack of your oven. Allow to cool completely on the baking tray.
Video
Notes
Lemons - make sure you wash and dry your lemons before zesting.Storage - Cookies can be stored in an airtight container for up to three days.Nutrition – is an approximate and is based on per cookie. This recipe makes 7 cookies.A note on measurements – This recipe uses weight measurements for the most accurate results. Cup measurements can vary depending on where you are, which affects the precision needed for a recipe like this. Here is where you can learn more about how to measure ingredients using digital kitchen scales.