01 - Line a 12-hole muffin tin with paper cupcake cases and set aside.
02 - Set a heatproof bowl over a saucepan of simmering water to create a double boiler. Add the milk chocolate, dark chocolate, butter, and golden syrup. Stir continuously until completely smooth and fully melted, then remove from heat.
03 - Gently fold the cornflakes into the melted chocolate mixture until evenly coated, taking care not to crush the flakes.
04 - Divide the chocolate-coated cornflake mixture evenly among the paper cases. Using the back of a spoon, press lightly to create nest shapes with a slight hollow in the center of each.
05 - Place 2-3 mini chocolate eggs in the center hollow of each nest while the chocolate is still slightly sticky.
06 - Refrigerate the muffin tin for at least 30 minutes, or until the chocolate nests are completely firm and set.
07 - Carefully remove the nests from the tin and peel away the paper cases before serving.