Sweet Potato & Apple Gratin is a comforting and flavorful side dish that combines the natural sweetness of sweet potatoes and apples with a creamy and cheesy sauce. The dish is made by layering thinly sliced sweet potatoes and apples in a baking dish, then pouring a mixture of cream, cheese, and spices over the top. It is then baked until the potatoes and apples are tender and the top is golden and bubbly.