Peel and cut sweet potatoes about 1" thick and lay on the bottom of a 9 X 13" baking dish. Slice and core apples rings (peeling left on) about 1" thick. Lay on top of sweet potatoes. Sprinkle Raisins and oats on top of apples
In a bowl mix together Orange juice, brown sugar, cinnamon and ginger, pour over sweet potatoes and apples. Than dab pats of butter on top of that.
Cover and bake in a 375 degree oven for about 1 hour or until the potatoes are done. The juices will thicken when cooked. Serve hot and enjoy.