Line an 8x8-inch tin with baking or parchment paper.
Chop the Milky Ways into small pieces and set aside.
Break the milk chocolate into pieces and place into a heatproof bowl with the condensed milk.
Place the bowl over a saucepan of gently simmering water on the stove to create a double boiler. Keep the heat low and stir occasionally until the chocolate has melted and the mixture becomes thick. Alternatively, melt it in the microwave, stirring every 20-30 seconds to prevent burning.
Add ¾ of the Milky Way bar pieces to the bowl and quickly stir them into the fudge.
Transfer the fudge to your lined tin and press down into place using a spatula or spoon.
Add the rest of the Milky Way bar pieces and all of the Magic stars on top of the fudge. Gently press them in to help them stick.
Refrigerate for 1-2 hours until firm then cut into pieces and enjoy.