Preheat oven to 350°F. Spray a 11 x 7-inch baking dish with cooking spray.
COMBINE brown sugar blend and cornstarch in a small saucepan. Stir in syrup and lemon juice.
COOK over medium heat, stirring constantly until mixture boils. Boil for 1 minute; remove from heat and set aside.
STIR together sweet potatoes, apples and cranberries in prepared pan; top with glaze. Mix well. Cover with foil.
BAKE for 30 minutes. Remove foil and continue to bake for 15 to 25 minutes or until sweet potatoes are tender.