Preheat oven to 350°F.
Coat 9-inch glass pie plate or quiche dish with nonstick cooking spray.
Spread sweet potatoes evenly in dish.
Arrange apple slices on top.
Sprinkle apples with cinnamon.
Melt apple jelly in small saucepan.
Brush over apples to glaze.
Bake 30 minutes or until apples are tender.