In a medium soup pot, heat oil over medium heat. Add garlic and cook until browned. Add bologna and sear meat on all sides; remove from pot and set aside.
To the same pan, add carrot, turnip and onion; cook for about 5 minutes, until slightly browned. Add stock to pot to deglaze. Allow stock and vegetables to simmer for about 15 minutes; add potatoes and green beans and continue to simmer until all vegetables are tender, about 5-10 minutes. Return bologna to pot.
In a small bowl, whisk corn starch and water to make a slurry. Bring stock to a roaring boil and whisk slurry into stew; boil until thickened, about 2-3 minutes.
Remove from heat; stir in fresh parsley and green onion. Season with salt and pepper and serve.