This is the perfect one-pot supper to make when you're running low on energy to cook. Use up leftovers such as shredded turkey, corn, potatoes, and herbs.
In a large pot, combine stock, celery, potatoes, onion powder, and thyme. Cover and bring to a boil. Turn heat down to a simmer and cook, uncovered, for 10 minutes. Stir in shredded turkey, corn, white beans, and lemon juice. Cook for 5 more minutes, until vegetables are warm.
Season to taste with salt and pepper, and serve topped with Parmesan cheese.