Butternut Squash Chocolate Mousse with Hazelnut Praline

Preheat oven to 200°C. Halve the butternut squash, rub with 1 tbsp butter, and roast cut-side down on a lined tray for 30-35 minutes until a knife slides through the flesh effortlessly.

Scoop the cooked flesh into a blender. Add brown sugar, vanilla extract, and a pinch of salt. Blend on high for 2 minutes until completely smooth. Pass through a fine sieve for a silken texture. Set aside to cool to room temperature.

Chop the dark chocolate finely and place in a heatproof bowl. Bring the whole milk just to a bare simmer over medium heat, then pour it over the chopped chocolate. Let it sit for 1 minute before stirring from the center outward until fully emulsified and glossy.

Fold the cooled butternut squash puree into the chocolate mixture until evenly incorporated. This bridges the cacao terroir with the squash's earthiness.

In a separate clean bowl, whip the heavy cream to soft peaks — it should hold a gentle curve when the whisk is lifted. Fold the whipped cream into the chocolate-squash base in two additions, using wide, deliberate strokes to preserve the air structure.

In another spotlessly clean bowl, whisk the 3 whole eggs and 2 extra egg whites with 2 tbsp brown sugar until pale, ribbony, and doubled in volume, about 3-4 minutes with a hand mixer on medium-high.

Gently fold the egg mixture into the chocolate base in three additions, folding just until no white streaks remain. Do not overwork — this is where the mousse's ethereal texture is born. Cover and refrigerate for at least 2 hours to set.

Spread the hazelnuts on a dry sheet pan and toast at 180°C for 8-10 minutes, until the skins blister and the kernels turn golden. Transfer to a clean kitchen towel and rub vigorously to remove loose skins. Let cool completely.

Line the same sheet pan with parchment. Spread the toasted hazelnuts in a single layer. In a small saucepan, heat 60g brown sugar with 1 tbsp water over medium heat without stirring until the edges begin to melt, then swirl the pan gently until all sugar turns to amber caramel, about 4-5 minutes.

Immediately pour the caramel over the hazelnuts. Add 1 tbsp butter and a pinch of salt, toss quickly to coat. Let cool on the parchment until the praline hardens, about 15 minutes. Break into irregular shards.

Divide the set mousse among four chilled glasses or bowls, using a spoon or piping bag for clean presentation. Each portion should be slightly domed at the center.

Crown each mousse with 3-4 hazelnut praline shards, placing them at jaunty angles to catch the light. Serve immediately, or keep refrigerated for up to 4 hours before service to preserve texture.