Piled high Mississippi mud pie

Ingredients

• 4 × 200 g packets bourbon biscuits
• 100 g butter, melted
• 175 g dark chocolate
• 175 g white chocolate
• 175 g milk chocolate
• 2 × 300 g tubs mascarpone cheese
• 110 g sugar
• 480 ml double cream
• Chocolate shavings, to decorate
• Raspberries and ice cream, to serve

Method

1. Mix the crushed bourbon biscuits with the melted butter, press into a loose-bottomed tin and chill for 1 hour.
2. Melt the dark, white and milk chocolates separately over barely simmering water.
3. Whip the cream to soft peaks. Beat the mascarpone with the sugar and fold in the cream, then divide equally between the three chocolates.
4. Spread the dark layer over the base and chill until set. Add the white layer, chill for about 2 hours, then add the milk-chocolate layer and set again.
5. Decorate with chocolate shavings and serve with raspberries and ice cream.