For the Dressing: (see note)
1/4 cup balsamic vinegar
1/2 cup water
1/4 cup walnuts
1/2 cup raisins
1 teaspoon Dijon mustard
1 small clove garlic
For the Salad:
5 cups mixed salad greens
5 cups chopped romaine lettuce
1 cup sliced radicchio
1 large ripe pear, cubed
1 large Granny Smith apple, chopped
1/2 cup thinly sliced red onion
1 tablespoon raw pumpkin seeds, lightly toasted