Preheat the oven at 175 degrees.
You need:
-210 g plain flour
- 115 g butter (room temperature)
- one egg
- zest of a lemon
- juice of half a lemon
- half a teaspoon of baking powder
- half a teaspoon of salt
- one egg
- a teaspoon of vanilla essence
Mix the flour, baking powder and salt. Separately mix the butter and sugar, beat well, then add the egg, and then add the lemon zest, lemon juice and vanilla essence. Add the flour mixture, mixing it all well. Put spoonfuls of the mixture on an oven tray covered with baking paper. Bake for 13-15 minutes.
If you want to make these even nicer make a simple glaze with 100 g of powdered sugar and around five tablespoons of lemon juice, just mixing it all well (it helps if you sift the powdered sugar, but don't bother if you are in a rush). Just pour the glazing with a spoon over the biscuits when they are cold (I cannot stand glazing, which is after all pure sugar, so I put as little as possible and don't bother about making them pretty - in fact the more uneven they are the more home-made they look)
