Summer Vegetable Soup

Ingredients

• 1 small onion, quartered and thinly sliced
• 1 tablespoon olive oil
• 4 cups reduced-sodium chicken or vegetable broth
• 1 cup sliced zucchini
• 1 can (15-1/2 ounces) navy beans, rinsed and drained
• 1/2 cup diced peeled red potato
• 1/2 cup cut fresh green beans (2-inch pieces)
• 1/2 cup chopped peeled tomato
• 1/4 teaspoon pepper
• 1/8 teaspoon ground turmeric
• 1/4 cup chopped celery leaves
• 2 tablespoons tomato paste