Considering that this minestrone soup incorporates mostly frozen vegetables, it is remarkably savory and aromatic. Look for frozen soup or stew vegetables with potatoes, carrots, celery and onion in the mix to give the soup the best flavor. Although pepperoni isn't traditionally part of minestrone soup, you'll find it's a great shortcut to add spicy, complex flavor. Recipe by Nancy Baggett for EatingWell. Download a FREE Healthy Italian Recipe Cookbook!