Preheat oven to 350 degrees F. In a large saucepan of boiling water, cook potatoes for 18 minutes or until tender. Drain and cool. Slice half the potatoes evenly and thinly into a lightly greased pie dish. Sprinkle half the cheese over the potatoes and pour half the cream evenly over the cheese. Repeat this process with the remaining cheese and cream. Spread garlic evenly over the top. Bake about 30-40 minutes or until browned and crisp.