2 large uncooked sweet potatoes, peeled and sliced 1/4 inch thick
1 large egg
2 cups heavy whipping cream
3/4 teaspoon salt
1/8 teaspoon ground nutmeg
3 tablespoons grated Parmesan cheese
Minced fresh thyme, optional
Place potatoes in a greased 8-in. square baking dish. In a bowl, beat egg. Add cream, salt, nutmeg and pepper; mix well. Pour over potatoes; sprinkle with cheese. Bake, uncovered, at 375° until the potatoes are tender, 40-45 minutes. If desired, top with fresh thyme to serve.