If you don't use sweet potatoes then you should, easy to use (apart from the peeling) and versatile. Here's the deal:
A dish (6 -8) Sweet Potatoes, maple syrup, seasoning, oil, garlic and chili peppers.
Peel the veg, lay in a dish, add a drop or two oil and the rest, drizzle with a decent MS and bake at about 180 degrees for 25 minutes. Mmmm.