Tuscan White Bean Salad with Spinach, Olives, and Sun-Dried Tomatoes Recipe

Ingredients

• 1 1/2 cups dried navy beans, rinsed and picked over
• 1/4 cup olive oil
• 1 yellow onion, finely chopped
• 4 cups firmly packed spinach, washed, drained, and stems removed
• 1/2 cup chopped sun-dried tomatoes
• 1/2 pound fresh mozzarella cheese, cut into 1/2-inch cubes
• 1/2 cup pitted black olives, such as kalamata or niçoise
• Italian Vinaigrette
• Salt
• freshly ground black pepper