You will need:
55 grams caster sugar.
2 tsp lemon thyme leaves, finely chopped.
115 grams unsalted butter, softened.
Finely grated zest of 2 lemons.
170 grams plain flour.
Extra caster sugar to dust.
Preheat the oven to 150 degrees C.
Set aside a lightly buttered, non-stick baking sheet.
Beat together the butter, sugar, lemon zest and thyme until creamy.
Beat in the flour to form a soft dough.
Place the dough onto a sheet of cling film or baking paper. Cover with a second sheet and roll out thinly.
Using a cutter, cut out your biscuits. Lift carefully onto the baking sheet and bake for 8-12 minutes until the edges turn a pale golden brown colour.
Take out of the oven, sprinkle with caster sugar and leave to cool on a wire rack.