A creamy, tangy scalloped potato dish with a crispy Gruyere cheese crust, perfect as a comforting side for any occasion.
Use even, thin slices for uniform cooking. Freshly shred Gruyere cheese for best melting and crust. Cover during initial baking to soften potatoes, then uncover to crisp the top. Rest before serving to thicken sauce. Tent with foil if top browns too fast. Can substitute dairy-free cream and cheese for a vegan version, but crust texture will differ.
Keywords: scalloped potatoes, Dijon mustard, Gruyere cheese, creamy potatoes, cheesy crust, comfort food, easy side dish