Put all the sweetened condensed milk, chocolate chips, and peanut butter into a saucepan and put it on the heat to melt, stirring occasionally. In about 2 minutes you should have your sauce ready. When everything has melted add 3 to 4 tablespoons of boiling water to thin the sauce.
Get out 4 sundae glasses and put a scoop of toffee or caramel ice cream in each, followed by 1 of the chocolate and then another of vanilla.
Pour over some chocolate peanut butter fudge sauce and sprinkle with salted peanuts.
Stick a chocolate cigar cookie in each sundae glass, hand them round and wait for people to weep with gratitude.
Recipe courtesy of Nigella Lawson(Copyright 2007, Nigella Express, Hyperion, All Rights Reserved)