Assemble the cake - on the first layer of the cake, pipe the chocolate buttercream using a a star nozzle and then drizzle some of the toffee sauce on top. Repeat again with the second layer.
If you want to make your own sauce - why not try our Salted Caramel Sauce Recipe
On the top layer, pipe on the rest of the chocolate buttercream and drizzle over some more toffee sauce. Add some Millionaires Shortbread Bites and sprinkle on some crushed Lotus biscuits.