Grease and line a square baking tin with parchment paper
BASE
Blend all the ingredients together until well combined - 10 sec in thermomix speed 8. Or just blend together in a food processor until it all comes together. Press evenly into the baking tin and pop into the freezer.
FILLING
Mix all ingredients for 1 minute in thermomix speed 5 or blend in food processor until smooth.
Remove the base from the freezer and spread the filling evenly over the base and pop back into the freezer while you prepare the chocolate top.
CHOCOLATE TOPPING
Mix in Thermomix Speed 8 for 10 seconds until combined or just stir together in a small jar until combined
Remove base and filling mixture from freezer, pour over the chocolate and even out with a blunt knife.
Pop back into the freezer for a couple hours to set. Remove from freezer, cut into squares and store back in the freezer.