Brown sausage and garlic in 4 qt heavy pot over medium heat until tender, stirring to break up sausage, about 5 minutes. Pour off excess fat.
Add chicken broth and water to a boil. Add ravioli; cook until tender. Stir in garbanzo beans, diced tomatoes, mustard, oregano and pepper. Heat through. Stir in spinach and cook until wilted, about 1 minutes.