Assemble the scalloped potatoes up to 6 hours in advance and refrigerate, covered with foil. Allow potatoes to come to room temperature before baking. Bake along with the turkey during the last 1 hours of roasting.
Sweet Potato and Pancetta Gratin - Food 52 (Dairy Vegetables Meat Deli meats Animal products Appetizer / sides You're my sweet potato 30 Degrees of Italian Bacon Salt Pancetta White pepper Heavy cream Sweet potatoes Gruyere cheese)
Herbed Potato Gratin with Roasted Garlic and Manchego Recipe from Food & Wine - One of my favorite things to eat and make. So simple and I get rave reviews when I make this. The key is infusing the herbs with the half and half.