For the cheesecake
600g good quality cream cheese, at room temperature
120g caster sugar
2/3 vanilla pod
4 free-range eggs, lightly beaten
60ml soured cream
Icing sugar for dusting
For the base
160g dry biscuits
(I used HobNobs, but you can use any digestive biscuits)
40g unsalted butter, melted
For the nut topping
150g salted macadamia nuts
90g caster sugar
For the caramel sauce
65g unsalted butter
160g caster sugar
100ml whipping (or double) cream
- Preheat the oven to 140ºC/Gas Mark 1. Lightly grease a 20cm springform cake tin and line the base and sides with baking parchment.
- To make the base, whiz the biscuits to crumbs in a food processor (or put them in a plastic bag and bash with a mallet or rolling pin). Mix with the melted butter to a wet, sandy consistency. Transfer to the lined tin and flatten with the back of a tablespoon to create a level base.
- To make the cake batter, put the sugar and cream cheese in a mixing bowl. Slit the vanilla pod lengthways in half and, using a sharp knife, scrape the seeds out into the bowl. Whisk by hand, or more easily with an electric mixer, until smooth. Gradually add the eggs and soured cream, whisking until smooth.
- Spread the Nutella over the biscuit base.
- Pour the cake mixture over the Nutella and place in the oven. Bake for about 60 minutes, until set; a skewer inserted in the centre should come out with a slightly wet crumb attached. Leave to cool at room temperature, then remove the side of the tin. Transfer the cake to a cake board or plate – but you can serve from the tin base if that proves tricky. Now chill the cake for at least a couple of hours.
- To prepare the nut topping, scatter the nuts over a baking sheet and roast in the oven at 140ºC/Gas Mark 1 for about 15 minutes, until golden. Remove from the oven and set aside. Line a baking tray with baking parchment.
- Place the sugar in a saucepan with a very thick base (it is important that the layer of sugar is not more than 3mm high in the pan, so choose a large one). Heat the sugar gently until it turns into a golden-brown caramel. Do not stir it at any stage. Don’t worry if some small bits of sugar don’t totally dissolve.
- Carefully add the toasted nuts and mix gently with a wooden spoon. When most of the nuts are coated in caramel, pour them on to the lined tray and leave to set. Break bits off and chop them very roughly with a large knife. It’s nice to leave some of the nuts just halved or even whole.
- To make the sauce, put the butter and sugar in a thick-bottomed saucepan and stir constantly over a medium heat with a wooden spoon until it becomes a smooth, dark caramel. The butter and sugar will look as if they have split. Don’t worry; just keep on stirring. Once the desired colour is reached, carefully add the cream while stirring vigourously. Remove from the heat and leave to cool.
- To finish the cake, dust the edges and sides with plenty of icing sugar. Spoon the sauce in the centre, allowing it to spill over a little. Scatter lots of caramelised nuts on top. The cheesecake will keep in the fridge for 3 days.