Heat olive oil over medium-high heat in a large soup pot.
Add onion and celery. Cook for 5-7 minutes, until softened.
Add potato, mixed vegetables, turkey, tomato sauce, chicken broth, Italian seasoning, and quinoa.
Season with salt and pepper, to taste.
Bring to a boil, reduce heat, and simmer for 25-30 minutes, until quinoa is cooked and potatoes are softened.
Top with parmesan cheese.