½ lb caster sugar
½ lb soft brown sugar
½ lb butter or margarine
Tin of sweetened condensed milk
Vanilla essence (1 tsp)
Put all the ingredients except the vanilla into a large saucepan. Bring to the boil. Boil for 13 minutes, adding the vanilla after 11 minutes.
When cooked, the mixture leaves the edge of the saucepan.
Stir with a wooden spoon, continuously from start to finish.
Lightly grease a suitable dish and pour the mixture into it. When nearly cool, cut into squares.