Trim the fat from roast and cut the meat into 1-inch cubes. Place the meat in a large pot over medium heat with the oil, onion and garlic and cook, stirring, until the meat is browned and the onion is tender.
Pour in the water, broth, and tomatoes. Stir in the mixed vegetables, mushrooms, and celery. Season with oregano, thyme, basil, parsley, and cayenne. Bring to a boil, then reduce the heat to low, cover, and simmer 75 minutes.
Stir in the pasta and cook for 10 to 15 minutes, or until the pasta is tender.
Recipe by Go Dairy Free at https://www.godairyfree.org/?p=161543