Lazy Lentil Soup

Ingredients

• 5 cups lower-sodium chicken broth
• 2 cups water
• 1 (14-ounce) can petite diced tomatoes
• 2 cups dried green lentils, picked through
• 3 medium carrots, sliced into 1/4-inch-thick rounds
• 1 small red onion, chopped
• 3 medium stalks celery, cut into 1/2-inch cubes
• 2 medium cloves garlic, minced
• 1/4 teaspoon dried thyme
• 1/4 teaspoon dried marjoram
• 1 1/2 tablespoons red wine vinegar
• 2 teaspoons kosher salt
• 1/2 teaspoon black pepper
• 1/4 cup flat-leaf parsley leaves
• 1/4 cup parmesan cheese, grated
• bread, optional, to taste, sliced