Preheat your oven to 180°C, 350°F, Gas Mark 4 Bake in the middle of the oven for approx 1 hr 20 mins. Leave in the tin for about 10 minutes before turning out. If it feels too soft, put back in the oven for another 10 minutes on a baking tray until it's a bit firmer. If you don't do this and you try to cut it once cold, it might be sticky inside. Also, the inside might collapse and you'll just have a cave of crust. I've done this myself on occasion.