Mash the raspberries in a bowl using a fork until smooth.
Strain through a sieve into a clean bowl to remove seeds.
Stir in the icing sugar until fully dissolved and set aside.
In a large bowl, whisk the double cream with vanilla extract until soft peaks form.
Gently fold in the condensed milk.
Add chopped white chocolate and half of the raspberry sauce.
Line a shallow tray with baking paper and pour in the mixture.
Spoon remaining raspberry sauce on top and lightly swirl for a ripple effect.
Freeze for at least 4 hours until firm.
Remove from freezer for 5 minutes before serving.
Cut into discs using a cutter and sandwich between biscuits.
These Raspberry White Chocolate Ice Cream Sandwiches are now ready to enjoy.