Nigella Lawson's Toffee Sauce

3/4 cup plus 1 tbsp brown sugar
2 tbsp dark corn syrup
3/4 stick unsalted butter
2/3 cup heavy cream

Put the sugar, syrup and butter in a pan and slowly bring to a boil, allowing the butter to melt and the sugar to dissolve. Let the mixture bubble for a couple of minutes before carefully & slowly adding the cream. Cook for another 2 to 3 minutes or until the sauce is thick, sticky and glossy. Serve with a couple of scoops of vanilla ice cream.