Escarole, endives, and oranges are all great sources of vitamin C. Sardines are rich in omega-3 fatty acids, which help keep arteries clear of cholesterol buildup guard against heart disease, and may even aid in treating depression.
Preheat oven to 375 degrees. Toast bread cubes on a baking sheet, tossing halfway through, for 15 minutes. Whisk together vinegar, oil, 2 tablespoons reserved orange juice, and 1 teaspoon salt. Season with pepper. Toss together escarole, endive, figs, and orange segments in a large bowl. Add the dressing and toasted bread, and toss. Serve topped with sardine halves.