Savory Lentil Vegetable Soup

Ingredients

• 1 medium yellow summer squash, cut into 1/2-inch cubes
• 3 teaspoons vegetable oil, divided
• 2 medium carrots, sliced
• 1 large potato, peeled and cut into 1/2-inch cubes
• 1 medium onion, chopped
• 2 garlic cloves, minced
• 1 teaspoon curry powder
• 1/4 teaspoon ground ginger
• 6 cups reduced-sodium chicken broth
• 1-1/4 cups dried lentils, rinsed
• 3 tablespoons no-salt-added tomato paste
• 1 tablespoon cider or red wine vinegar
• 1/2 teaspoon pepper
• 4 cups coarsely chopped fresh spinach