Apple Hazelnut Upside Down Cake

As seen on TV
Which Show?
Who made this dish?
Voice-over: "27 year old mum of two, Catherine works at a motorway service station near the village where she lives in Sussex. If she manages to find any free time, she bakes with 7 year old Maisie and 3 year old Ambrose. Her signature upside down cake features apple, vanilla, calvados, hazelnut and caramel."
Paul Hollywood; "Just make sure that your timing is perfect. A successful upside down cake is all about time.'
Paul Hollywood: "The decoration seems to have worked. You've done what you told us you were going to do."
Mary Berry: "I rather like the way that you've coarsely chopped the nuts around the outside. And then we have the nut with its spike at the top. It's really lovely."
Paul Hollywod: "The texture, the flavor, the crunch. Gorgeous. I think it's a beautiful cake."

