This trifle tastes so luxurious that your family or friends will think it took you all day to make it! This version doesn't involve jelly which I think makes trifle so time consuming. I use frozen raspberries instead. They become nice and soft when they thaw and soak into the sponge. To make your prep time even quicker, use a plain sponge cake or Madeira from a local bakery and ready made custard. All you have to do is arrange the layers and whip the cream!