Blackberry Chicken Salad

This is one of my favorite salads; it is as beautiful to look at as it is to eat and is very versatile.  You can use the ingredients you have on hand.  I always make a little extra Grilled Rosemary Chicken and use the leftovers for this salad.

For the dressing:
1/2 small package of blackberries (about a handful)
1/4 cup red wine vinegar
1 T plus 1 t sugar
1/2 cup extra-virgin olive oil
1 t Dijon mustard
1/4 t salt
freshly ground pepper
a small amount of finely diced shallots or red onion
Place all the ingredients (except the onion) in a small food processor or blender and puree until smooth.

For the salad:
spring greens
grilled chicken cut into strips
sliced pears or apples
blackberries
gorgonzola, blue or feta cheese, crumbled
toasted walnuts
sliced avocado
anything else you might fancy that would look and taste nice