Ingredients:
300g sugar
2 tbsp condensed milk
1 tbsp butter
120ml milk
1/2 tsp vanilla extract
Method:
Combine all the ingredients (except the vanilla) in a saucepan and gently bring to a boil over low heat, stirring frequently. Allow to boil for 15 minutes, or until it reaches the soft ball stage (where sugar syrup dropped into cold water will form a soft, flexible ball. If you remove the ball from water, it will flatten like a pancake after a few moments in your hand).
Remove from the heat and stir-in the vanilla. Beat until the mixture is creamy and just begins to thicken then pour into a well-greased baking tin. Cut into squares whilst still warm then allow to cool completely and break the squares apart.