Preheat oven to 350 and grease a 9X9 baking dish with cooking spray.
In a small bowl, combine brown sugar, cinnamon and ginger and mix well. Set aside.
Add sweet potatoes to baking dish and spread evenly in pan. Top with sliced apples. Pour half & half onto top of apples. Sprinkle with brown sugar mixture. Top with dots of butter.
Bake for 25-30 minutes or until apples are tender and mixture is bubbly.
Serve warm and enjoy!
Notes
This casserole can easily be made ahead of time. Make as directed, cover and store in the refrigerator for up to 48 hours. Then allow the casserole to sit at room temperature for 30 minutes before baking.