Sticky Toffee Cupcakes with Salted Caramel Buttercream

Everybody’s favourite pudding brought bang up-to-date as a cupcake with salted caramel buttercream. There are 2 alternative toppings: the first involves making a caramel; the second, simply opening a jar of dulce de leche. The choice is yours, though the former will give a pleasing bitter edge. If you prefer an unsalted caramel buttercream, omit the salt and use unsalted butter.