4pounds (125g)russet potatoespeeled and thinly sliced
1 1/2cupscheddar cheeseshredded
Instructions
Preheat the oven to 375°F (190°C). Coat a 9x13-inch (23 cm x 33 cm) baking dish with nonstick spray and set it aside.
In a pot, melt the butter and cook the onions until softened. Add the cream, milk, thyme, and nutmeg. Season with salt and pepper, then bring to a simmer.
Add the potatoes and cook until tender, about 30 to 35 minutes, stirring occasionally.
Remove the thyme sprigs and pour the potatoes into the baking dish. Top with cheese.
Bake for 20 to 25 minutes, until the top is slightly golden. Allow the dish to sit for a minimum of 15 minutes before serving, and sprinkle with extra thyme leaves, if desired.
Notes
If you want to try a different cheese, I recommend gruyere. It's sweet, but slightly salty.