In a large pot add 1 tbsp oil over medium high heat add onions, celery and mushrooms and cook till onions are slightly tender add ground beef and cook till browned. Make sure you keep the beef from sticking or clumping. Drain any fats.
Add remaining ingredients up to but not including the pasta. Cook over medium heat for 1 hr or until veggies are somewhat tender.
Add your cooked pasta and serve with a dollop of sour cream and some grated cheddar cheese.