Deliciously buttery and melt-in-your-mouth shortbread topped with a generous layer of soft, gooey caramel, and a layer of milk chocolate. These bars are absolutely irresistible!
Preheat the oven to 180C/350F/Gas 4. Line an 8x8-inch square baking pan with parchment paper. Set aside.
In a large bowl, whisk together the flour, cornflour, and sugar.
Add the butter and, using a pastry cutter, fork, or your fingertips, work it into the mixture until it resembles coarse breadcrumbs.
Press the mixture firmly into the bottom of the prepared pan. Bake for 25 - 30 minutes or until very lightly browned on top.
Once baked, set aside to cool whilst preparing the caramel.
For the Caramel
Add the butter and sugar to a large saucepan over medium heat. Stir until melted and combined.
Add the condensed milk and bring to the boil, stirring continuously.
Cook until the mixture turns a rich caramel colour, has thickened, and is pulling away from the sides - about 5 - 6 minutes.
TIP: If using a candy thermometer, cook until the caramel reaches 107C / 225F.
Pour the caramel over the shortbread layer, and leave to set completely in the fridge.
For the Topping
Add the chocolate and cream to a microwave-safe bowl and heat in 20 second intervals, stirring after each one, until melted and smooth.
Pour over the caramel layer and spread out evenly. If desired, sprinkle with sea salt.
Refrigerate until the chocolate has set completely before slicing into bars.
Video
Notes
Millionaire's shortbread can be stored in an airtight container at room temperature or in the fridge for up to 1 week.They also freeze well, wrapped individually, for up to 3 months. Thaw overnight in the fridge before serving.