Think of this bar as the rich man’s twix.
In the bowl of an electric mixer fitted with the paddle attachment, beat the sugar and butter together until blended.
Turn the dough out onto a lightly floured work surface. Dust the top of the dough and your hands with
Prick the dough all over with a fork and
Stovetop method: Put the sweetened condensed milk in a medium heat-proof bowl and set it over a saucepan of boiling water over low heat. Cook for 1 to 1 ½ hours, until thick and caramel colored. Remove the bowl from the pan and beat until smooth.
Microwave oven method: Put the sweetened condensed milk in a large microwave-safe bowl. Cook on 50 percent power (medium) for 4 minutes, stirring briskly halfway through, until smooth. Cook on 30 percent power (medium-low) for 12 to 18 minutes, until very thick and caramel colored, stirring briskly every 2 minutes, until smooth.
Pour the caramel filling over the cooled shortbread and place the pan in the refrigerator until cool, about two hours.
In a large nonreactive metal bowl, combine the chocolate, corn syrup, and butter. Set the bowl over a saucepan of simmering water and cook, stirring with a rubber spatula, until the mixture is completely smooth. Remove the bowl from the pan and stir for 30 seconds to cool slightly. Pour the mixture over the chilled caramel layer and use an offset spatula to spread it into an even layer.
Put in the refrigerator for 1 hour, or until the glaze hardens.
Remove the pan from the refrigerator 30 minutes before serving so as not to crack the chocolate glaze. Cut into squares and serve.
The bars can be stored in the refrigerator, tightly covered, for up to 4 days.
© 2008 All rights reserved. Published by Abrams Books.