1 cup dried split peas, rinsed
5 cups vegetable broth, no-salt-added or low sodium
1 large onion, chopped
1/2 cup chopped celery
1 large sweet potato, peeled and chopped
1 apple, peeled, cored, and chopped
1 bay leaf
1/2 tablespoon dried mint or 1 1/2 tablespoons fresh mint, minced
2 packed cups baby spinach or romaine lettuce, torn into bite-sized pieces