Slice potatoes very thin. Wash under cold running water. Place in a saucepan. Cover with water. Bring to a boil and simmer for 5 minutes. Drain in a colander. Add potatoes to a mixing bowl. Mix in the garlic, 1 cup Swiss cheese, cream, salt and pepper. Spoon in an oven proof baking dish. Top with the remaining cheese.
Bake for 35 to 45 minutes, or until top is brown and potatoes are fully cooked.