In a large bowl, crush the Digestive biscuits into medium-sized chunks then stir in the chopped Aero chocolate. Set aside for now.
Break the milk chocolate into pieces and add it to a saucepan along with the butter, golden syrup and cocoa powder. Put over low heat and stir gently until fully melted.
Pour the melted mixture into the bowl with the crushed Digestives and chopped chocolate. Mix well then press it firmly into your lined tin.
Melt the white chocolate and spread it over the biscuit layer in the tin. Top with Mint Aero Bubbles.
Refrigerate the whole thing for 2 hours until firm, then cut into slices and enjoy!
Video
Notes
Can be stored in an airtight container in the fridge for up to 2 weeks.
Add ½ teaspoon peppermint extract to the white chocolate for a stronger mint flavour.