Looking to lighten the calorie load and sleepy after effects of your Thanksgiving dinner? Try this easy mashed sweet potato recipe as a substitute for regular mashed potatoes! Mashed potatoes are a classic staple Thanksgiving side dish, but aren't the best for your waistline, weight, or health. The butter and cream or whole milk in mashed potatoes (used to give them their smooth texture) are high in saturated fat, which is the "bad" fat that can clog your arteries and raise y