Easy Chocolate Fudge

method:

• Chop the chocolate into small chunks and place in a non-stick saucepan with the condensed milk and butter. Heat very gently, stirring occasionally until melted and smooth. (Alternatively place these ingredients into a microwave-safe bowl and microwave in 10-20 second bursts, stirring frequently, until the mixture is silky smooth).
• Beat the icing sugar into the mixture until combined thoroughly. Press the fudge into a 18cm (7in) square tin, smooth over the top and press the nuts into the surface, if using.
• Chill in the fridge for at least one hour until set, then cut into squares.