Both children and adults will love these crisp, melt-in-the-mouth biscuits. They are a wholesome treat, packed with oatmeal and raisins for extra flavour and nutrition. It's worth making a double batch and freezing some.
Preheat the oven to 180ºC. Place the margarine and sugar in a bowl and beat with an electric mixer until pale and fluffy. Gradually beat in the egg. Sift over the flour, then add the oatmeal and raisins and fold in with a large metal spoon.
Drop heaped teaspoonfuls of the mixture onto 3 greased baking trays, leaving enough space around each spoonful to allow it to spread during baking.
Bake for 10–15 minutes or until golden-brown. Cool slightly on the baking trays, then transfer to a wire rack and leave to cool completely. These biscuits can be kept in an airtight container for 3–4 days or frozen for 2 months.