Sweet Potatoes and Apples

1 large sweet potato, sliced
2 granny smith apple - peeled, & thinly sliced
1⁄2 teaspoon cinnamon
1/4 cup brown sugar
1/4 cup butter

Preheat oven to 400.

In a bowl, toss the sweet potato and apple slices with the cinnamon and sugar. Pour into a baking dish. Top with butter thinly sliced evenly over the top.

Cook 40 minutes turning every 10 minutes, until potatoes and apples are tender.