Place the potatoes and parsnips in a pot; cover with water and bring to boil. Salt the water and cook to tender.
Drain and mash the potatoes and parsnips with onion powder, garlic powder, buttermilk, sour cream, blue cheese and butter. Fold in the herbs, lemon zest and juice and season with salt and pepper.
This is one of many “Yum-o!” recipes – it’s good and good for you. To find out more about Yum-o!, Rachael’s nonprofit organization, visit