Potato Substitute?
Potatoes are a great filler food; cheap and versatile. But of course in terms of nutrition it's not the best to eat in large quantities because of the starch and sugar. Is there a good substitute that can be used as a substitute (can still be mashed or stir fried) way but the body can process it in a more nutritious way?
(I know the mashed cauliflower trick - my parents love making it but ugh.)