Old Irish Scalloped Potatoes

Preheat oven to 325 degrees F (165 degrees C).

Arrange thinly sliced potatoes in a 9x13-inch baking dish.

Layer butter slices on top of potatoes. Season with salt and black pepper.

Pour half-and-half evenly over potato mixture.

Bake in preheated oven until sauce has thickened and potatoes are tender 45 to 60 minutes.