01 -
Set the oven to preheat at 375°F (190°C) to ensure an even baking environment.
02 -
In a large pot, fill with water and bring to a boil. Add the sliced sweet potatoes and cook until tender, about 10 to 15 minutes. Drain thoroughly.
03 -
Arrange half of the tender sweet potato slices in a single layer in a greased baking dish.
04 -
Evenly distribute half of the fresh cranberries over the sweet potato layer.
05 -
In a mixing bowl, combine heavy cream, brown sugar, ground cinnamon, salt, and black pepper. Stir until well integrated. Pour half of this mixture over the sweet potatoes and cranberries.
06 -
Layer the remaining sweet potatoes and cranberries on top, then pour over the rest of the cream mixture to cover.
07 -
Sprinkle the shredded Gruyère cheese evenly over the surface, then top with breadcrumbs for a crisp finish.
08 -
Transfer the baking dish to the preheated oven and bake for 30 to 35 minutes, or until the top becomes golden brown and bubbling.