As the Spring temperature took a sudden dip I found myself wanting a warming bowl of soup. Not a thick, stand your spoon up in it, winter vegetable soup but a lighter, fresher one.  This Pea & Watercress soup is like Spring in a bowl! Not only is the colour amazing but the flavours are intense too.  It may seem like an awful lot of peas, but as well as giving the soup a great flavour they also act as a thickener.  The watercress then adds a lovely light peppery flavour on top. This really is so quick and easy to make and the soup only contains three ingredients! A bowl of this will make a huge boost to your daily vegetable intake, the peas adding a great source of protein and the watercress is packed full of amazing vitamins and minerals.  A perfect lunch, starter or pour into a flask for a healthy packed lunch.  If you have time then do make the seed topping as it gives a great crunchy contrast.  Sprinkle them on …