I love this recipe. It is in the oven in about 5 minutes and it is out again 10 minutes later! It is out of the Dinner Lady cook book.
225g plain flour
140g butter at room temperature
55g caster sugar
Preheat oven to 180 degrees Celsius
Lightly grease and line a 20cm square cake tin
Rub butter into flour
Mix through the sugar
Dump into tin and lightly press down with fingers
Use a spoon to press mixture firmly into the tin and flatten the top.
Use a fork to make pretty patterns on top
Cook for 10 minutes
Cut into pieces and allow to cool