Toffee Semifreddo

Instructions

1. 1

   Preheat the oven to 180°C. Line an 18cm round baking dish with parchment paper.

   Tip: For easy removal, make sure the parchment paper is large enough.

2. 2

   In a medium saucepan, combine the sugar, butter, and salt. Place over medium heat and cook, stirring occasionally, until the sugar has dissolved.

   Tip: Use a candy thermometer to monitor the temperature.

3. 3

   Bring the mixture to 160°C, then carefully pour in the toffee syrup. Remove from heat and stir until combined.

   Tip: Be careful, as the mixture will bubble up vigorously.

4. 4

   Pour the mixture into the prepared baking dish and smooth the top.

   Tip: Use a spatula to spread the toffee mixture evenly.

5. 5

   Bake for 10 minutes, then remove from the oven and sprinkle the chopped nuts and toffee bits over the top.

   Tip: This will help the toffee mixture set.

6. 6

   Let the toffee mixture cool slightly, then pour in the egg whites, one at a time, beating well after each addition.

   Tip: This will help incorporate air and create a light texture.

7. 7

   Add the flour, cocoa powder, and vanilla extract to the toffee mixture. Beat until just combined.

   Tip: Don't overmix, as this can lead to a dense texture.

8. 8

   Pour the toffee mixture into a chilled metal bowl and let it cool to room temperature.

   Tip: Cover with plastic wrap and refrigerate for at least 2 hours.

9. 9

   Just before serving, melt the dark chocolate chips in a double boiler or in the microwave in 30-second increments, stirring between each interval.

   Tip: Pour the melted chocolate over the toffee mixture and smooth the top.

10. 10

    Sprinkle with sea salt and chopped nuts, if desired.

    Tip: This will add a nice textural element to the dish.