Preheat your oven to 325 degrees. Butter a 9x13 baking dish. Melt the butter in a small pan & toss in the minced garlic. Saute until nicely browned & fragrant.
Layer half of the thinly sliced potatoes in the bottom of the dish. Sprinkle half of the Gouda cheese on top. Top with the other half of the sliced potatoes. Pour on the butter garlic mixture.
Combine the heavy cream with the salt & pepper & pour on top of the potatoes. Sprinkle the rest of the Gouda cheese on top.
Bake for 75 minutes - serve immediately.