Yukon Gold Potato Gratin

There was Gold to be found in the Yukon...now we have the Yukon Gold potato. Delicious. Try this gratin using them and you won't be disappointed.
SERVES 4 (change servings and units)
Ingredients:
1/2 tablespoon unsalted butter
1 lb yukon gold potato
1 cup canadian sharp cheddar cheese
2 tablespoons sour cream
1 tablespoon olive oil
2 garlic cloves, very finely minced
1 tablespoon fresh thyme
3/4 teaspoon salt
1/8 teaspoon ground black pepper
1/3 cup chicken broth or white wine
4 fresh thyme sprigs (to garnish)

Directions:
Heat oven to 400 degrees F.
Butter a 9-inch round or oval baking dish.
Slice potatoes 1/8-inch thick and combine thoroughly
in a mixing bowl with 1/2 cup cheddar cheese,
the sour cream, olive oil, garlic, thyme, salt, and pepper.
Arrange potatoes in a neat overlapping pattern in the baking dish.
Pour chicken broth over potatoes.
Bake 35 minutes, until potatoes are nearly-tender
and the cheese and potatoes are starting to brown.
Sprinkle with remaining cheese and bake another 10-15 minutes.
Garnish with thyme sprigs.