Chocolate Mousse Bars

Directions

1. 1
   Preheat the oven to 425°F. Lightly grease and line an 8-inch square cake pan with parchment paper.
2. 2
   Combine chocolate, butter and syrup in a heatproof bowl. Place over a saucepan of simmering water and stir until smooth. Cool slightly.
3. 3
   Beat eggs and sugar in a large bowl with an electric mixer 8-10 mins until very thick and pale. Gently fold in flour, then chocolate mixture, until combined. Pour into prepared pan.
4. 4
   Bake 12-15 mins. Remove from oven and run a knife around edges. Transfer to the refrigerator for 1 hour to cool (this step is important as it sets the middle of the cake).
5. 5
   Meanwhile, for the coffee mascarpone, dissolve coffee in 1 tbsp boiling water in a medium bowl; set aside to cool. Add mascarpone and powdered sugar and beat with electric mixer until thick.
6. 6
   Cut dessert into squares. Serve topped with dollops of coffee mascarpone and sprinkled with sifted cocoa powder.