Flourless chocolate praline cake
This is a dense, rich cake with just a hint of hazelnut flavour, best served with a generous dollop of whipped cream.
Prep time: 30 minutes, plus cooling
Cooking time: 1 hour
175g unsalted butter, softened, plus extra for greasing
100g whole blanched hazelnuts
175g caster sugar
200g dark chocolate (70% cocoa), chopped
5 eggs, yolks separated
½ tsp salt
1. Preheat the oven to 180°C/R4. Grease a 23cm cake tin and line with baking parchment. Put the hazelnuts in a roasting tray and roast for 10 minutes until golden. Set aside and, once cool, blitz in a food processor with 25g sugar until finely ground. Meanwhile, melt the chocolate in a bowl set over a pan of barely simmering water.
2. Using electric beaters, cream the butter and 100g sugar in a bowl for 5 minutes, until pale and fluffy. Beat in the egg yolks one at a time, then the melted chocolate and salt. Fold through the ground hazelnuts.
3. Reduce the oven to 160°C/R2. In a separate bowl, whisk the egg whites to stiff peaks. Whisk in the remaining 50g sugar until stiff and glossy. Stir a third of the egg whites into the chocolate mixture to loosen, then carefully fold in the remaining egg whites, a third at a time, trying to retain as much air as possible. Carefully tip into the tin, gently smooth the top and bake for 50-55 minutes until just set.
4. Don’t worry if it sinks a little in the centre as it comes out of the oven. Cool in the tin for 20 minutes, then remove the sides (leave the base on) and cool completely on a wire rack.
5. Slice and serve with hot chocolate sauce and Chantilly cream.