Spinach Salad in Orange Dressing With Pine Nuts - With greens

6 navel oranges , chilled 4 cups spinach , trimmed (1 large bunch) 1 1/2 cups watercress , trimmed (1 bunch) 1 tablespoon pine nuts 1/3 cup shallot , minced[...]

1 (6 ounce) package baby spinach leaves, rinsed and dried 2 tablespoons fresh orange juice 1 teaspoon balsamic vinegar 1 teaspoon Dijon mustard 3 tablespoons[...]