Who knew you could freeze crostini? Well you do now. This recipe works brilliantly and I am sure many other toppings will work just as well - and will follow shortly, I am really really excited about this idea. These make ahead canapés are so simple, just slices of bread brushed with olive oil, covered in a delicious topping and frozen. Great for all the outside entertaining we are all desperate to enjoy. Ingredients - makes 12 1 small baguette 2 small slices Parma ham,