Preheat your oven to 350°F (175°C).

Grease your oven-safe baking dish with 1 tablespoon of butter.

Peel and thinly slice the potatoes, about 1/8 inch thick.

Begin layering half of the potato slices in the baking dish.

Sprinkle half of the shredded cheese over the potato layer and season with salt, pepper, garlic powder, and onion powder.

Whisk together the heavy cream and milk, then pour half of the cream mixture over the potatoes and cheese.

Add the remaining potato slices on top and layer with the rest of the cheese and cream mixture.

Dot the top with the remaining butter and cover the dish with foil.

Bake for 45 minutes, remove the foil, and bake for an additional 15 minutes until golden and bubbly.

Let the dish sit for about 10 minutes before serving.