1. In a food processor, crush the Super Wine biscuits and 3/4 of the packet of Stripes biscuits until they form fine crumbs.
2. Melt together the butter and condensed milk in the microwave. Stir to combine before adding to the crushed biscuits and blitzing again until everything is fully combined.
3. Press the mixture firmly into the base of a baking paper lined tin.
4. To make the topping, melt the white chocolate in the microwave in 30 second increments. Spread evenly over the slice.
5. Melt the milk chocolate and use a spoon or piping bag* to drizzle chocolate 'stripes' over the top of the slice. Decorate with the remaining Stripes biscuits.
6. Allow the slice to set in the fridge for an hour before slicing and enjoy!

*Don't have a piping bag? You can use a ziplock bag. Just add your melted chocolate and snip off the end.