Minestrone originated in italy, and the thick vegetable is often made with pasta and rice. Other traditional ingredients include onions, beans, carrots, celery, and onions. There is actually no set recipe as it's traditionally made from whatever vegetables are in season. The earliest iteration of minestrone soup actually dates back to the expansion of the latin tribes into what became the roman republic and then the roman empire, when the local diet was vegetarian by necessity. Minestrone soup is quite healthy and low in fat. This vegetarian crock pot minestrone soup recipe has no oil, so it is virtually fat-free as well as low in calories. You can also add extra veggies, such as sweet corn (a favorite), green peas or even some pre-soaked or canned beans. See also: more vegetarian soup recipesmore vegetarian recipes.