Here's a recipe I enjoy making. The cheese amount all depends on how strong or mild you like your potatoes. I vary it depending on who I'm serving it to. It's an easy recipe to play with.
POTATO GRATIN WITH GARLIC/HERB CHEESE
2 cups heavy cream
One to two packages garlic/herb cheese (Boursin, Alouette, etc.)
3 pounds small red potatoes, thinly sliced (use mandolin)
Salt and Pepper
Butter a 9 x 13 baking dish. In saucepan, melt cheese with the cream. In the baking dish, layer 1/2 the potatoes & sprinkle with salt, pepper & granulated garlic; pour half of the cheese mixture over, and repeat the layers. Bake 1 hour at 400 or until potatoes are tender & heated through.