Line a 20cm square tin with non-stick parchment paper.
Divide the condensed milk evenly between two bowls.
Add the condensed milk to the melted dark chocolate and stir until completely combined. Pour into the prepared tin and use the back of a spoon to spread it to an even layer
Add the condensed milk to the melted white chocolate, along with a few drops of green gel food colouring. Stir to combine, adding more green colouring if needed to reach your desired colour.
Pour the chocolate layer into the prepared tin and spread until smooth. Add the green layer on top and spread until smooth.
Place in the fridge for a minimum of three hours or until set.
Trim the edges, then cut into squares. Drizzle each square with melted chocolate and top with Dr Oetker Glamour and Sparkle Sprinkles.