Step 1

Preheat the oven to 190°c (170 fan/ 375F/ Gas and line a large baking tray with baking paper.

Step 2

Cream together the butter and sugar until light and fluffy.

Step 3

Beat in the egg, lemon zest (from 2 lemons) and the lemon juice from just 1 of the lemons.

Step 4

Stir in the flour and baking powder and mix to form a dough. If the mixture is a little dry add more lemon juice (from the second lemon) and mix and continue to do this until a smooth dough forms. Use your hands to bring the dough together in the bowl.

Step 5

Cover the bowl with clingfilm and chill the dough in the fridge for 15 minutes.

Step 6

Take tablespoons of the dough and roll into balls. Place on the baking sheet (you should get about 20 cookies). Flatten down slightly with the back of a spoon.

Step 7

Bake in the oven for 15 minutes. Take out of the oven and flatten down again with the back of a spoon. These biscuits do not spread and are meant to be thick, round and bitesize.

Step 8

Once cool sift over the icing sugar and serve!