"The sweet potato is a vegetable that's perfect for the fall – the color and the flavor always make us think of harvesttime," wrote Dolly Parton in her new book. "Rachel likes to cover her casserole ...
Grind the pecans in a food processor to a coarse powder ... Preheat the oven to 350 degrees. Roast the sweet potatoes until tender all the way through (about 1 hour), then cool to room temperature.